Dear @Jason.Jonkman ,
When perform simulations in FAST.Farm i am having some issues regarding the outputs. The output “RtCtAvgT1” always appears at 0. Do you know why that might be happening?
Thank you for your time.
Best regards,
Dear @Ines.Baptista,
FAST.Farm output RtCtAvgT1 should be computed for all situations. Is the rotor thrust in fact zero for your cases?
Best regards,
Dear @Ines.Baptista,
I’m not sure what would cause RtCtAvgT1 to be zero if the rotor thrust is not zero. Are you sure your post-processing the correct output of FAST.Farm? Can you share your FAST.Farm primary input and output file?
Best regards
Dear @Jason.Jonkman ,
Yes, my FAST.Farm input is:
Summary
------- FAST.Farm for OpenFAST INPUT FILE -------------------------------------------------
Comment
— SIMULATION CONTROL —
False Echo - Echo input data to .ech? (flag)
FATAL AbortLevel - Error level when simulation should abort (string) {“WARNING”, “SEVERE”, “FATAL”}
11100.0 TMax - Total run time (s) [>=0.0]
3 Mod_AmbWind - Ambient wind model (-) (switch) {1: high-fidelity precursor in VTK format, 2: one InflowWind module, 3: multiple instances of InflowWind module}
2 Mod_WaveField - Wave field handling (-) (switch) {1: use individual HydroDyn inputs without adjustment, 2: adjust wave phases based on turbine offsets from farm origin}
0 Mod_SharedMooring - Shared mooring system model (switch) {0: None, 3=MoorDyn}}
— SHARED MOORING SYSTEM — [used only for Mod_SharedMoor>0]
“” SharedMoorFile - Name of file containing shared mooring system input parameters (quoted string) [used only when Mod_SharedMooring > 0]
0.04 DT_Mooring - Time step for farm-level mooring coupling with each turbine (s) [used only when Mod_SharedMooring > 0]
True WrMooringVis - Write shared mooring visualization, at DT_Mooring timestep (-) [only used for Mod_SharedMooring=3]
— AMBIENT WIND: PRECURSOR IN VTK FORMAT — [used only for Mod_AmbWind=1]
2.0 DT_Low-VTK - Time step for low-resolution wind data input files; will be used as the global FAST.Farm time step (s) [>0.0]
0.5 DT_High-VTK - Time step for high-resolution wind data input files (s) [>0.0]
“unused” WindFilePath - Path name to VTK wind data files from precursor (string)
False ChkWndFiles - Check all the ambient wind files for data consistency? (flag)
— AMBIENT WIND: INFLOWWIND MODULE — [used only for Mod_AmbWind=2 or 3]
13.0 DT_Low - Time step for low-resolution wind data interpolation; will be used as the global FAST.Farm time step (s) [>0.0]
0.25 DT_High - Time step for high-resolution wind data interpolation (s) [>0.0]
323/3 NX_Low - Number of low-resolution spatial nodes in X direction for wind data interpolation (-) [>=2]
146 NY_Low - Number of low-resolution spatial nodes in Y direction for wind data interpolation (-) [>=2]
88 NZ_Low - Number of low-resolution spatial nodes in Z direction for wind data interpolation (-) [>=2]
0 X0_Low - Origin of low-resolution spatial nodes in X direction for wind data interpolation (m)
-725.0 Y0_Low - Origin of low-resolution spatial nodes in Y direction for wind data interpolation (m)
1.0 Z0_Low - Origin of low-resolution spatial nodes in Z direction for wind data interpolation (m)
45 dX_Low - Spacing of low-resolution spatial nodes in X direction for wind data interpolation (m) [>0.0]
10 dY_Low - Spacing of low-resolution spatial nodes in Y direction for wind data interpolation (m) [>0.0]
10 dZ_Low - Spacing of low-resolution spatial nodes in Z direction for wind data interpolation (m) [>0.0]
97 NX_High - Number of high-resolution spatial nodes in X direction for wind data interpolation (-) [>=2]
97 NY_High - Number of high-resolution spatial nodes in Y direction for wind data interpolation (-) [>=2]
127 NZ_High - Number of high-resolution spatial nodes in Z direction for wind data interpolation (-) [>=2]
“IEA-15-240-RWT_InflowFile.dat” InflowFile - Name of file containing InflowWind module input parameters (quoted string)
— WIND TURBINES —
2 NumTurbines - Number of wind turbines (-) [>=1] [last 6 columns below used only for Mod_AmbWind=2 or 3]
WT_X WT_Y WT_Z WT_FASTInFile X0_High Y0_High Z0_High dX_High dY_High dZ_High
(m) (m) (m) (string) (m) (m) (m) (m) (m) (m)
720.0 0 0.0 “IEA-15-240-RWT-UMaineSemi_WT1.fst” 480.0 -240.0 1.0 5.0 5.0 5.0
2400.0 0 0.0 “IEA-15-240-RWT-UMaineSemi_WT2.fst” 2160.0 -240.0 1.0 5.0 5.0 5.0
— WAKE DYNAMICS —
1 Mod_Wake - Switch between wake formulations {1:Polar, 2:Curl, 3:Cartesian} (-) (switch)
5.0 dr - Radial increment of radial finite-difference grid (m) [>0.0]
75 NumRadii - Number of radii in the radial finite-difference grid (-) [>=2]
140 NumPlanes - Number of wake planes (-) [>=2]
240 RotorDiamRef - Reference turbine rotor diameter for wake calculations (m) [>0.0]
DEFAULT f_c - Cutoff (corner) frequency of the low-pass time-filter for the wake advection, deflection, and meandering model [recommended=1.28*U0/R] (Hz) [>0.0]
DEFAULT C_HWkDfl_O - Calibrated parameter in the correction for wake deflection defining the horizontal offset at the rotor (m) or DEFAULT [=0.0]
DEFAULT C_HWkDfl_OY - Calibrated parameter in the correction for wake deflection defining the horizontal offset at the rotor scaled with yaw error (m/deg) or DEFAULT [=0.3]
DEFAULT C_HWkDfl_x - Calibrated parameter in the correction for wake deflection defining the horizontal offset scaled with downstream distance (-) or DEFAULT [=0.0]
DEFAULT C_HWkDfl_xY - Calibrated parameter in the correction for wake deflection defining the horizontal offset scaled with downstream distance and yaw error (1/deg) or DEFAULT [=-0.004]
DEFAULT C_NearWake - Calibrated parameter for the near-wake correction (-) [>1. and <2.5] or DEFAULT [=1.8]
DEFAULT k_vAmb - Calibrated parameter for the influence of ambient turbulence in the eddy viscosity (-) [>=0.0] or DEFAULT [=0.05]
DEFAULT k_vShr - Calibrated parameter for the influence of the shear layer in the eddy viscosity (-) [>=0.0] or DEFAULT [=0.016]
DEFAULT C_vAmb_DMin - Calibrated parameter in the eddy viscosity filter function for ambient turbulence defining the transitional diameter fraction between the minimum and exponential regions (-) [>=0.0] or DEFAULT [=0.0]
DEFAULT C_vAmb_DMax - Calibrated parameter in the eddy viscosity filter function for ambient turbulence defining the transitional diameter fraction between the exponential and maximum regions (-) [> C_vAmb_DMin] or DEFAULT [=1.0]
DEFAULT C_vAmb_FMin - Calibrated parameter in the eddy viscosity filter function for ambient turbulence defining the value in the minimum region (-) [>=0.0 and <=1.0] or DEFAULT [=1.0]
DEFAULT C_vAmb_Exp - Calibrated parameter in the eddy viscosity filter function for ambient turbulence defining the exponent in the exponential region (-) [> 0.0] or DEFAULT [=0.01]
DEFAULT C_vShr_DMin - Calibrated parameter in the eddy viscosity filter function for the shear layer defining the transitional diameter fraction between the minimum and exponential regions (-) [>=0.0] or DEFAULT [=3.0]
DEFAULT C_vShr_DMax - Calibrated parameter in the eddy viscosity filter function for the shear layer defining the transitional diameter fraction between the exponential and maximum regions (-) [> C_vShr_DMin] or DEFAULT [=25.0]
DEFAULT C_vShr_FMin - Calibrated parameter in the eddy viscosity filter function for the shear layer defining the value in the minimum region (-) [>=0.0 and <=1.0] or DEFAULT [=0.2]
DEFAULT C_vShr_Exp - Calibrated parameter in the eddy viscosity filter function for the shear layer defining the exponent in the exponential region (-) [> 0.0] or DEFAULT [=0.1]
DEFAULT Mod_WakeDiam - Wake diameter calculation model (-) (switch) {1: rotor diameter, 2: velocity based, 3: mass-flux based, 4: momentum-flux based} or DEFAULT [=1]
DEFAULT C_WakeDiam - Calibrated parameter for wake diameter calculation (-) [>0.0 and <0.99] or DEFAULT [=0.95] [unused for Mod_WakeDiam=1]
DEFAULT Mod_Meander - Spatial filter model for wake meandering (-) (switch) {1: uniform, 2: truncated jinc, 3: windowed jinc} or DEFAULT [=3]
DEFAULT C_Meander - Calibrated parameter for wake meandering (-) [>=1.0] or DEFAULT [=1.9]
— CURLED-WAKE PARAMETERS [only used if Mod_Wake=2 or 3] —
0 WAT - Switch between wake-added turbulence box options {0: no wake added turbulence, 1: predefined turbulence box, 2: user defined turbulence box} (switch)
“../WAT_MannBoxDB/FFDB_D100_512x512x64.u” WAT_BoxFile - Filepath to the file containing the u-component of the turbulence box (either predefined or user-defined) (quoted string)
512, 512, 64 WAT_NxNyNz - Number of points in the x, y, and z directions of the WAT_BoxFile [used only if WAT=2, derived value if WAT=1] (-)
5.0, 5.0, 5.0 WAT_DxDyDz - Distance (in meters) between points in the x, y, and z directions of the WAT_BoxFile [used only if WAT=2, derived value if WAT=1] (m)
default WAT_ScaleBox - Flag to scale the input turbulence box to zero mean and unit standard deviation at every node [DEFAULT=False] (flag)
default WAT_k_Def - Calibrated parameters for the influence of the maximum wake deficit on wake-added turbulence (set of 5 parameters: k_Def, FMin, DMin, DMax, Exp) (-) [>=0.0, >=0.0 and <=1.0, >=0.0, >DMin, >0.0] or DEFAULT [DEFAULT=[0.6, 0.0, 0.0, 2.0, 1.0 ]]
default WAT_k_Grad - Calibrated parameters for the influence of the radial velocity gradient of the wake deficit on wake-added turbulence (set of 5 parameters: k_Grad, FMin, DMin, DMax, Exp) (-) [>=0.0, >=0.0 and <=1.0, >=0.0, >DMin, >0.0] or DEFAULT [DEFAULT=[3.0, 0.0, 0.0, 12.0, 0.65]
— VISUALIZATION —
False WrDisWind - Write low- and high-resolution disturbed wind data to .Low.Dis.t.vtk etc. (flag)
0 NOutDisWindXY - Number of XY planes for output of disturbed wind data across the low-resolution domain to .Low.DisXY<n_out>.t.vtk (-) [0 to 9]
90.0 OutDisWindZ - Z coordinates of XY planes for output of disturbed wind data across the low-resolution domain (m) [1 to NOutDisWindXY] [unused for NOutDisWindXY=0]
0 NOutDisWindYZ - Number of YZ planes for output of disturbed wind data across the low-resolution domain to /Low.DisYZ<n_out>.t.vtk (-) [0 to 9]
600.0,978.0 OutDisWindX X - coordinates of YZ planes for output of disturbed wind data across the low-resolution domain (m) [1 to NOutDisWindYZ] [unused for NOutDisWindYZ=0]
0 NOutDisWindXZ - Number of XZ planes for output of disturbed wind data across the low-resolution domain to /Low.DisXZ<n_out>.t.vtk (-) [0 to 9]
1500.0 OutDisWindY - Y coordinates of XZ planes for output of disturbed wind data across the low-resolution domain (m) [1 to NOutDisWindXZ] [unused for NOutDisWindXZ=0]
13.0 WrDisDT - Time step for disturbed wind visualization output (s) [>0.0] or DEFAULT [=DT_Low or DT_Low-VTK] [unused for WrDisWind=False and NOutDisWindXY=NOutDisWindYZ=NOutDisWindXZ=0]
— OUTPUT —
False SumPrint - Print summary data to .sum? (flag)
99999.9 ChkptTime - Amount of time between creating checkpoint files for potential restart (s) [>0.0]
0.0 TStart - Time to begin tabular output (s) [>=0.0]
1 OutFileFmt - Format for tabular (time-marching) output file (switch) {1: text file [.out], 2: binary file [.outb], 3: both}
True TabDelim - Use tab delimiters in text tabular output file? (flag) {uses spaces if False}
“ES10.3E2” OutFmt - Format used for text tabular output, excluding the time channel. Resulting field should be 10 characters. (quoted string)
DEFAULT OutAllPlanes - Output all wake planes at all time steps. [DEFAULT=False]
3 NOutRadii - Number of radial nodes for wake output for an individual rotor (-) [0 to 20]
0, 15, 39 OutRadii - List of radial nodes for wake output for an individual rotor (-)
2 NOutDist - Number of downstream distances for wake output for an individual rotor (-) [1 to NOutRadii] [unused for NOutRadii=0] rotor (-) [0 to 9]
0.0, 378.0 OutDist - List of downstream distances for wake output for an individual rotor (m) [1 to NOutDist] [unused for NOutDist =0]
1 NWindVel - Number of points for wind output (-) [0 to 9]
600.0 WindVelX - List of coordinates in the X direction for wind output (m) [1 to NWindVel] [unused for NWindVel=0]
1500.0 WindVelY - List of coordinates in the Y direction for wind output (m) [1 to NWindVel] [unused for NWindVel=0]
90.0 WindVelZ - List of coordinates in the Z direction for wind output (m) [1 to NWindVel] [unused for NWindVel=0]
OutList - The next line(s) contains a list of output parameters. (quoted string)
“RtAxsXT1, RtAxsYT1, RtAxsZT1”
“RtCtAvgT1”
“RtCtAvgT2”
“RtPosXT1, RtPosYT1, RtPosZT1”
“YawErrT1”
“TIAmbT1”
“CtT1N01, CtT1N02, CtT1N03, CtT1N04, CtT1N05”
“WkAxsXT1D1, WkAxsXT1D2, WkAxsXT1D3”
“WkAxsYT1D1, WkAxsYT1D2, WkAxsYT1D3”
“WkAxsZT1D1, WkAxsZT1D2, WkAxsZT1D3”
“WkPosXT1D1, WkPosXT1D2, WkPosXT1D3”
“WkPosYT1D1, WkPosYT1D2, WkPosYT1D3”
“WkPosZT1D1, WkPosZT1D2, WkPosZT1D3”
“WkDfVxT1N01D1, WkDfVxT1N02D1, WkDfVxT1N03D1, WkDfVxT1N04D1, WkDfVxT1N05D1”
“WkDfVxT1N01D2, WkDfVxT1N02D2, WkDfVxT1N03D2, WkDfVxT1N04D2, WkDfVxT1N05D2”
“WkDfVxT1N01D3, WkDfVxT1N02D3, WkDfVxT1N03D3, WkDfVxT1N04D3, WkDfVxT1N05D3”
“WkDfVrT1N01D1, WkDfVrT1N02D1, WkDfVrT1N03D1, WkDfVrT1N04D1, WkDfVrT1N05D1”
“WkDfVrT1N01D2, WkDfVrT1N02D2, WkDfVrT1N03D2, WkDfVrT1N04D2, WkDfVrT1N05D2”
“WkDfVrT1N01D3, WkDfVrT1N02D3, WkDfVrT1N03D3, WkDfVrT1N04D3, WkDfVrT1N05D3”
END of input file (the word “END” must appear in the first 3 columns of this last OutList line)
And the output is (I did not put the whole file due to the length of it):
Summary
Time RtAxsXT1 RtAxsYT1 RtAxsZT1 RtCtAvgT1 RtCtAvgT2 RtPosXT1 RtPosYT1 RtPosZT1 YawErrT1 TIAmbT1 CtT1N01 CtT1N02 CtT1N03 CtT1N04 CtT1N05 WkAxsXT1D1 WkAxsXT1D2 WkAxsXT1D3 WkAxsYT1D1 WkAxsYT1D2 WkAxsYT1D3 WkAxsZT1D1 WkAxsZT1D2 WkAxsZT1D3 WkPosXT1D1 WkPosXT1D2 WkPosXT1D3 WkPosYT1D1 WkPosYT1D2 WkPosYT1D3 WkPosZT1D1 WkPosZT1D2 WkPosZT1D3 WkDfVxT1N01D1 WkDfVxT1N02D1 WkDfVxT1N03D1 WkDfVxT1N04D1 WkDfVxT1N05D1 WkDfVxT1N01D2 WkDfVxT1N02D2 WkDfVxT1N03D2 WkDfVxT1N04D2 WkDfVxT1N05D2 WkDfVxT1N01D3 WkDfVxT1N02D3 WkDfVxT1N03D3 WkDfVxT1N04D3 WkDfVxT1N05D3 WkDfVrT1N01D1 WkDfVrT1N02D1 WkDfVrT1N03D1 WkDfVrT1N04D1 WkDfVrT1N05D1 WkDfVrT1N01D2 WkDfVrT1N02D2 WkDfVrT1N03D2 WkDfVrT1N04D2 WkDfVrT1N05D2 WkDfVrT1N01D3 WkDfVrT1N02D3 WkDfVrT1N03D3 WkDfVrT1N04D3 WkDfVrT1N05D3
(s) (-) (-) (-) (-) (-) (m) (m) (m) (deg) (percent) (-) (-) (-) INVALID INVALID (-) (-) INVALID (-) (-) INVALID (-) (-) INVALID (m) (m) INVALID (m) (m) INVALID (m) (m) INVALID (m/s) (m/s) (m/s) INVALID INVALID (m/s) (m/s) (m/s) INVALID INVALID INVALID INVALID INVALID INVALID INVALID (m/s) (m/s) (m/s) INVALID INVALID (m/s) (m/s) (m/s) INVALID INVALID INVALID INVALID INVALID INVALID INVALID
0.0000 9.945E-01 0.000E+00 -1.045E-01 1.373E+00 1.373E+00 7.080E+02 0.000E+00 1.500E+02 -8.389E-01 1.783E+01 0.000E+00 -1.946E-10 -1.404E-24 0.000E+00 0.000E+00 9.945E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -1.045E-01 0.000E+00 0.000E+00 7.080E+02 0.000E+00 0.000E+00 -2.517E-01 0.000E+00 0.000E+00 1.500E+02 0.000E+00 0.000E+00 -1.006E+00 -5.988E-14 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
13.0000 9.976E-01 -1.730E-03 -6.978E-02 0.000E+00 0.000E+00 7.046E+02 -4.735E-01 1.483E+02 -6.253E+00 1.783E+01 0.000E+00 -1.527E-10 -1.102E-24 0.000E+00 0.000E+00 9.945E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -1.045E-01 0.000E+00 0.000E+00 7.080E+02 0.000E+00 0.000E+00 -2.517E-01 0.000E+00 0.000E+00 1.500E+02 0.000E+00 0.000E+00 -1.006E+00 -5.988E-14 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
26.0000 9.967E-01 -4.425E-03 -8.115E-02 0.000E+00 0.000E+00 7.079E+02 6.517E-01 1.489E+02 3.772E+00 1.762E+01 0.000E+00 -2.552E-10 -1.841E-24 0.000E+00 0.000E+00 9.976E-01 0.000E+00 0.000E+00 -1.730E-03 0.000E+00 0.000E+00 -6.978E-02 0.000E+00 0.000E+00 7.046E+02 0.000E+00 0.000E+00 -2.348E+00 0.000E+00 0.000E+00 1.483E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
39.0000 9.973E-01 -4.011E-03 -7.388E-02 0.000E+00 0.000E+00 7.077E+02 -5.127E-01 1.492E+02 1.227E+00 1.674E+01 0.000E+00 -1.598E-10 -1.153E-24 0.000E+00 0.000E+00 9.967E-01 0.000E+00 0.000E+00 -4.425E-03 0.000E+00 0.000E+00 -8.115E-02 0.000E+00 0.000E+00 7.079E+02 0.000E+00 0.000E+00 1.642E+00 0.000E+00 0.000E+00 1.483E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
52.0000 9.965E-01 -8.708E-04 -8.403E-02 0.000E+00 0.000E+00 7.096E+02 5.469E-01 1.486E+02 -1.244E-01 1.589E+01 0.000E+00 -2.572E-10 -1.856E-24 0.000E+00 0.000E+00 9.973E-01 0.000E+00 0.000E+00 -4.011E-03 0.000E+00 0.000E+00 -7.388E-02 0.000E+00 0.000E+00 7.070E+02 0.000E+00 0.000E+00 -6.987E-01 0.000E+00 0.000E+00 1.395E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
65.0000 9.970E-01 3.981E-03 -7.780E-02 0.000E+00 0.000E+00 7.084E+02 -5.310E-01 1.492E+02 1.591E+00 1.522E+01 0.000E+00 -1.435E-10 -1.036E-24 0.000E+00 0.000E+00 9.965E-01 0.000E+00 0.000E+00 -8.708E-04 0.000E+00 0.000E+00 -8.403E-02 0.000E+00 0.000E+00 7.098E+02 0.000E+00 0.000E+00 -4.975E-01 0.000E+00 0.000E+00 1.518E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
78.0000 9.963E-01 5.932E-03 -8.545E-02 0.000E+00 0.000E+00 7.087E+02 2.061E-01 1.491E+02 -9.406E-01 1.506E+01 0.000E+00 -1.608E-10 -1.160E-24 0.000E+00 0.000E+00 9.970E-01 0.000E+00 0.000E+00 3.981E-03 0.000E+00 0.000E+00 -7.780E-02 0.000E+00 0.000E+00 7.083E+02 0.000E+00 0.000E+00 -1.146E+00 0.000E+00 0.000E+00 1.478E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
91.0000 9.963E-01 2.940E-03 -8.614E-02 0.000E+00 0.000E+00 7.080E+02 -2.707E-01 1.486E+02 2.175E+00 1.488E+01 0.000E+00 -9.342E-11 -6.741E-25 0.000E+00 0.000E+00 9.963E-01 0.000E+00 0.000E+00 5.932E-03 0.000E+00 0.000E+00 -8.545E-02 0.000E+00 0.000E+00 7.087E+02 0.000E+00 0.000E+00 6.506E-02 0.000E+00 0.000E+00 1.486E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
104.0000 9.960E-01 -2.258E-03 -8.966E-02 0.000E+00 0.000E+00 7.083E+02 2.193E-02 1.495E+02 -2.047E+00 1.417E+01 0.000E+00 -2.772E-10 -2.000E-24 0.000E+00 0.000E+00 9.963E-01 0.000E+00 0.000E+00 2.940E-03 0.000E+00 0.000E+00 -8.614E-02 0.000E+00 0.000E+00 7.080E+02 0.000E+00 0.000E+00 3.817E-01 0.000E+00 0.000E+00 1.486E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
117.0000 9.964E-01 -2.460E-03 -8.438E-02 0.000E+00 0.000E+00 7.077E+02 5.436E-02 1.489E+02 3.525E+00 1.330E+01 0.000E+00 -2.345E-10 -1.692E-24 0.000E+00 0.000E+00 9.960E-01 0.000E+00 0.000E+00 -2.258E-03 0.000E+00 0.000E+00 -8.966E-02 0.000E+00 0.000E+00 7.091E+02 0.000E+00 0.000E+00 1.223E+01 0.000E+00 0.000E+00 1.582E+02 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
130.0000 9.961E-01 2.849E-03 -8.843E-02 0.000E+00 0.000E+00 7.089E+02 -4.088E-01 1.489E+02 -1.740E+00 1.308E+01 0.000E+00 -3.060E-10 -2.208E-24 0.000E+00 0.000E+00 9.964E-01 9.945E-01 0.000E+00 -2.460E-03 0.000E+00 0.000E+00 -8.438E-02 -1.045E-01 0.000E+00 7.073E+02 1.088E+03 0.000E+00 1.264E+00 9.891E-01 0.000E+00 1.449E+02 1.538E+02 0.000E+00 -4.530E-01 -9.159E-23 0.000E+00 0.000E+00 0.000E+00 -9.746E-01 -1.001E-12 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -4.619E-04 -1.777E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
143.0000 9.966E-01 7.092E-03 -8.173E-02 0.000E+00 0.000E+00 7.086E+02 1.366E-01 1.494E+02 2.621E-01 1.277E+01 0.000E+00 -4.945E-10 -3.568E-24 0.000E+00 0.000E+00 9.961E-01 9.945E-01 0.000E+00 2.849E-03 0.000E+00 0.000E+00 -8.843E-02 -1.045E-01 0.000E+00 7.088E+02 1.089E+03 0.000E+00 6.057E-01 2.793E-02 0.000E+00 1.478E+02 1.583E+02 0.000E+00 -8.669E-01 -7.396E-21 0.000E+00 0.000E+00 0.000E+00 -9.730E-01 -1.106E-12 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -4.594E-04 -1.767E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
156.0000 9.962E-01 7.486E-03 -8.681E-02 0.000E+00 0.000E+00 7.098E+02 -6.629E-01 1.487E+02 -3.401E+00 1.285E+01 0.000E+00 -5.595E-10 -4.037E-24 0.000E+00 0.000E+00 9.966E-01 9.945E-01 0.000E+00 7.092E-03 0.000E+00 0.000E+00 -8.173E-02 -1.045E-01 0.000E+00 7.085E+02 1.089E+03 0.000E+00 -3.271E-01 -1.797E-01 0.000E+00 1.485E+02 1.602E+02 0.000E+00 -1.106E+00 -1.816E-18 0.000E+00 0.000E+00 0.000E+00 -9.721E-01 -1.171E-12 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -4.577E-04 -1.761E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
169.0000 9.966E-01 4.178E-03 -8.189E-02 0.000E+00 0.000E+00 7.092E+02 2.871E-01 1.493E+02 1.844E-01 1.326E+01 0.000E+00 -3.708E-10 -2.675E-24 0.000E+00 0.000E+00 9.962E-01 9.970E-01 0.000E+00 7.486E-03 -3.590E-03 0.000E+00 -8.681E-02 -7.763E-02 0.000E+00 7.108E+02 1.086E+03 0.000E+00 -2.579E+00 7.358E-01 0.000E+00 1.602E+02 1.520E+02 0.000E+00 -1.042E+00 -4.490E-19 0.000E+00 0.000E+00 0.000E+00 -8.580E-02 6.386E-13 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -2.296E-04 -8.831E-05 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
182.0000 9.963E-01 2.534E-03 -8.583E-02 0.000E+00 0.000E+00 7.097E+02 -6.242E-01 1.491E+02 -6.300E-01 1.348E+01 0.000E+00 -3.756E-10 -2.711E-24 0.000E+00 0.000E+00 9.966E-01 9.971E-01 0.000E+00 4.178E-03 -4.159E-03 0.000E+00 -8.189E-02 -7.649E-02 0.000E+00 7.078E+02 1.086E+03 0.000E+00 1.178E+01 -3.524E+00 0.000E+00 1.322E+02 1.394E+02 0.000E+00 -1.145E+00 -1.015E-19 0.000E+00 0.000E+00 0.000E+00 -1.196E-01 4.646E-13 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -5.503E-04 -2.117E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
195.0000 9.965E-01 3.043E-03 -8.410E-02 0.000E+00 0.000E+00 7.090E+02 3.248E-01 1.487E+02 -1.802E+00 1.372E+01 0.000E+00 -2.087E-10 -1.506E-24 0.000E+00 0.000E+00 9.963E-01 9.970E-01 0.000E+00 2.534E-03 -2.857E-03 0.000E+00 -8.583E-02 -7.761E-02 0.000E+00 7.097E+02 1.088E+03 0.000E+00 -8.132E-01 -3.525E+00 0.000E+00 1.491E+02 1.568E+02 0.000E+00 -1.218E+00 -4.558E-19 0.000E+00 0.000E+00 0.000E+00 -1.473E-01 2.487E-13 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -6.840E-04 -2.631E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
208.0000 9.959E-01 6.446E-03 -8.987E-02 0.000E+00 0.000E+00 7.094E+02 -5.257E-01 1.494E+02 2.178E-01 1.383E+01 0.000E+00 -2.540E-10 -1.833E-24 0.000E+00 0.000E+00 9.965E-01 9.965E-01 0.000E+00 3.043E-03 -3.898E-04 0.000E+00 -8.410E-02 -8.341E-02 0.000E+00 7.090E+02 1.089E+03 0.000E+00 -2.157E-01 -3.575E+00 0.000E+00 1.487E+02 1.517E+02 0.000E+00 -1.184E+00 -8.321E-20 0.000E+00 0.000E+00 0.000E+00 -1.348E-01 8.698E-13 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -6.436E-04 -2.475E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
221.0000 9.961E-01 8.674E-03 -8.759E-02 0.000E+00 0.000E+00 7.091E+02 1.262E-01 1.491E+02 -1.889E+00 1.339E+01 0.000E+00 -2.772E-10 -2.000E-24 0.000E+00 0.000E+00 9.959E-01 9.968E-01 0.000E+00 6.446E-03 2.612E-03 0.000E+00 -8.987E-02 -7.956E-02 0.000E+00 7.100E+02 1.088E+03 0.000E+00 -3.881E+00 -5.946E+00 0.000E+00 1.552E+02 1.550E+02 0.000E+00 -1.089E+00 -3.647E-20 0.000E+00 0.000E+00 0.000E+00 -1.764E-01 3.620E-13 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -1.427E-03 -5.490E-04 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
Thank you.
Best Regards,
Dear @Ines.Baptista,
Well, I see that RtCtAvgT1 is not zero at time zero (but is in fact 1.37), but it is zero later in the simulation (from 13 s and later). The time series you shared only shows a subset of the results, so, it is difficult to understand what is happening. Also, 1.37 is quite high for Ct, suggesting that you may not have initialized your rotor speed or blade pitch angle properly in your OpenFAST models, based on the mean hub-height wind speed you are simulating. How are the wind turbines responding (how do the OpenFAST results look) for this case?
Best regards,
Dear @Jason.Jonkman ,
The rest of the time series always presentes the RtCtAvgT1 at 0. The OpenFAST results seem normal, this is the output for the first turbine:
Summary
Time Wind1VelX Wind1VelY Wind1VelZ Azimuth BldPitch1 BldPitch2 BldPitch3 GenSpeed RotSpeed RotThrust RotTorq PtfmRDyi PtfmRDxi PtfmRDzi PtfmTDxt PtfmTDyt PtfmTDzt PtfmTDxi PtfmTDyi PtfmTDzi YawPzn NcIMUTAxs NcIMUTAys NcIMUTAzs NcIMURVxs NcIMURVys NcIMURVzs NcIMURAxs NcIMURAys NcIMURAzs TwrTpTDxi TwrTpTDyi TwrTpTDzi YawBrTDxp YawBrTDyp YawBrTDzp YawBrTDxt YawBrTDyt YawBrTDzt YawBrTVxp YawBrTVyp YawBrTVzp YawBrTAxp YawBrTAyp YawBrTAzp RtArea RtSpeed RtTSR RtVAvgxh B1N1AxInd GenPwr GenTq Wave1Elev WavesF1xi WavesF1zi WavesM1yi WavesF2xi WavesF2zi WavesM2yi WavesF2xi WavesF2yi WavesF2zi WavesM2xi WavesM2yi WavesM2zi HydroFxi HydroFyi HydroFzi PRPSurge PRPSway PRPHeave FAIRTEN1 FAIRTEN2 FAIRTEN3 ANCHTEN1 ANCHTEN2 ANCHTEN3
(s) (m/s) (m/s) (m/s) (deg) (deg) (deg) (deg) (rpm) (rpm) (kN) (kN-m) (deg) (deg) (deg) (m) (m) (m) (m) (m) (m) (deg) (m/s^2) (m/s^2) (m/s^2) (deg/s) (deg/s) (deg/s) (deg/s^2) (deg/s^2) (deg/s^2) (m) (m) (m) (m) (m) (m) (m) (m) (m) (m/s) (m/s) (m/s) (m/s^2) (m/s^2) (m/s^2) (m^2) (rpm) (-) (m/s) (-) (kW) (kN-m) (m) INVALID INVALID INVALID INVALID INVALID INVALID INVALID INVALID INVALID INVALID INVALID INVALID (N) (N) (N) (m) (m) (m) (N) (N) (N) (N) (N) (N)
0.0000 2.952E+00 5.830E-02 1.214E-01 0.000E+00 1.000E+00 1.000E+00 1.000E+00 5.000E+00 5.000E+00 5.253E+02 8.643E+03 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 1.559E-01 -3.956E-01 1.337E-02 0.000E+00 0.000E+00 0.000E+00 8.162E+00 -2.192E+01 -4.253E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 1.564E-01 -3.956E-01 -2.994E-03 4.554E+04 5.000E+00 1.931E+01 3.264E+00 2.301E-01 4.455E+03 8.886E+03 4.177E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 8.085E+05 1.842E+05 2.034E+08 0.000E+00 0.000E+00 0.000E+00 2.439E+06 2.439E+06 2.439E+06 1.353E+06 1.353E+06 1.353E+06
0.0250 2.949E+00 5.316E-02 1.130E-01 7.451E-01 1.000E+00 1.000E+00 1.000E+00 4.936E+00 4.936E+00 5.083E+02 8.651E+03 -8.813E-05 1.781E-05 -2.393E-11 -3.426E-05 -8.933E-06 -1.402E-06 -3.426E-05 -8.933E-06 -1.402E-06 -1.583E-03 8.841E-02 -3.856E-01 -3.411E-03 1.961E-01 -5.349E-01 -1.056E-01 7.169E+00 -2.043E+01 -3.942E+00 4.516E-05 -1.251E-04 -1.478E-06 3.015E-04 -7.126E-05 -1.084E-07 3.015E-04 -7.126E-05 -7.614E-08 3.338E-03 -1.002E-02 -1.582E-04 8.756E-02 -3.856E-01 -1.263E-02 4.554E+04 4.969E+00 2.081E+01 3.011E+00 2.197E-01 4.398E+03 8.886E+03 4.147E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 7.530E+05 1.511E+05 2.036E+08 -3.426E-05 -8.933E-06 -1.402E-06 2.413E+06 2.455E+06 2.446E+06 1.353E+06 1.353E+06 1.353E+06
0.0500 2.946E+00 4.803E-02 1.046E-01 1.481E+00 1.000E+00 1.000E+00 1.000E+00 4.882E+00 4.882E+00 4.776E+02 8.672E+03 -3.325E-04 6.306E-05 -1.920E-07 -1.279E-04 -3.198E-05 -1.055E-05 -1.279E-04 -3.198E-05 -1.055E-05 -6.055E-03 -7.542E-02 -2.579E-01 -3.403E-02 3.442E-01 -1.000E+00 -1.914E-01 4.202E+00 -1.657E+01 -2.173E+00 1.395E-04 -4.910E-04 -1.168E-05 1.105E-03 -3.001E-04 -1.584E-06 1.105E-03 -3.001E-04 -1.131E-06 3.452E-03 -1.899E-02 -7.620E-04 -7.859E-02 -2.579E-01 -2.596E-02 4.555E+04 4.939E+00 2.212E+01 2.815E+00 2.129E-01 4.350E+03 8.886E+03 4.118E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 6.015E+05 6.957E+04 2.038E+08 -1.279E-04 -3.198E-05 -1.055E-05 2.419E+06 2.449E+06 2.444E+06 1.352E+06 1.352E+06 1.352E+06
0.0750 2.942E+00 4.289E-02 9.626E-02 2.211E+00 1.000E+00 1.000E+00 1.000E+00 4.847E+00 4.847E+00 4.308E+02 8.704E+03 -6.915E-04 1.187E-04 -1.207E-06 -2.613E-04 -6.104E-05 -3.522E-05 -2.613E-04 -6.104E-05 -3.522E-05 -1.220E-02 -3.212E-01 -7.158E-02 -7.758E-02 3.979E-01 -1.347E+00 -2.108E-01 1.398E-01 -1.081E+01 3.505E-01 1.778E-04 -1.024E-03 -4.029E-05 2.182E-03 -6.641E-04 -6.977E-06 2.182E-03 -6.641E-04 -5.083E-06 -1.375E-03 -2.273E-02 -1.567E-03 -3.275E-01 -7.151E-02 -4.358E-02 4.556E+04 4.914E+00 2.397E+01 2.585E+00 2.088E-01 4.319E+03 8.886E+03 4.088E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 3.625E+05 -4.111E+04 2.042E+08 -2.613E-04 -6.104E-05 -3.522E-05 2.419E+06 2.446E+06 2.444E+06 1.352E+06 1.352E+06 1.352E+06
0.1000 2.939E+00 3.776E-02 8.787E-02 2.937E+00 1.001E+00 1.001E+00 1.001E+00 4.834E+00 4.834E+00 3.714E+02 8.744E+03 -1.110E-03 1.633E-04 -3.847E-06 -4.089E-04 -8.573E-05 -8.174E-05 -4.089E-04 -8.573E-05 -8.175E-05 -1.804E-02 -6.191E-01 9.642E-02 -1.268E-01 3.501E-01 -1.532E+00 -1.683E-01 -3.823E+00 -3.843E+00 2.700E+00 1.049E-05 -1.593E-03 -9.535E-05 3.217E-03 -1.096E-03 -1.824E-05 3.217E-03 -1.096E-03 -1.363E-05 -1.325E-02 -2.196E-02 -2.852E-03 -6.290E-01 9.662E-02 -6.141E-02 4.558E+04 4.893E+00 2.589E+01 2.383E+00 2.072E-01 4.307E+03 8.885E+03 4.059E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 7.025E+04 -1.503E+05 2.046E+08 -4.089E-04 -8.573E-05 -8.175E-05 2.419E+06 2.441E+06 2.443E+06 1.351E+06 1.351E+06 1.351E+06
0.1250 2.936E+00 3.263E-02 7.949E-02 3.662E+00 1.002E+00 1.002E+00 1.002E+00 4.841E+00 4.841E+00 3.112E+02 8.789E+03 -1.514E-03 1.740E-04 -8.799E-06 -5.365E-04 -9.529E-05 -1.617E-04 -5.365E-04 -9.529E-05 -1.617E-04 -2.199E-02 -9.263E-01 1.899E-01 -1.740E-01 2.155E-01 -1.538E+00 -7.708E-02 -6.637E+00 3.393E+00 4.155E+00 -5.502E-04 -2.101E-03 -1.887E-04 3.802E-03 -1.568E-03 -3.469E-05 3.802E-03 -1.568E-03 -2.702E-05 -3.286E-02 -1.784E-02 -4.536E-03 -9.393E-01 1.902E-01 -7.625E-02 4.559E+04 4.877E+00 2.795E+01 2.201E+00 2.085E-01 4.313E+03 8.884E+03 4.029E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -2.328E+05 -2.301E+05 2.050E+08 -5.365E-04 -9.529E-05 -1.617E-04 2.421E+06 2.434E+06 2.440E+06 1.351E+06 1.351E+06 1.351E+06
0.1500 2.933E+00 2.749E-02 7.110E-02 4.390E+00 1.003E+00 1.003E+00 1.003E+00 4.862E+00 4.862E+00 2.589E+02 8.836E+03 -1.828E-03 1.331E-04 -1.647E-05 -6.089E-04 -8.125E-05 -2.865E-04 -6.089E-04 -8.125E-05 -2.865E-04 -2.292E-02 -1.203E+00 1.771E-01 -2.135E-01 3.377E-02 -1.370E+00 3.257E-02 -7.560E+00 9.868E+00 4.271E+00 -1.694E-03 -2.488E-03 -3.299E-04 3.520E-03 -2.071E-03 -5.231E-05 3.521E-03 -2.071E-03 -4.345E-05 -5.990E-02 -1.286E-02 -6.522E-03 -1.219E+00 1.776E-01 -8.655E-02 4.561E+04 4.868E+00 3.010E+01 2.041E+00 2.123E-01 4.331E+03 8.882E+03 4.000E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -5.026E+05 -2.601E+05 2.054E+08 -6.089E-04 -8.125E-05 -2.865E-04 2.427E+06 2.425E+06 2.435E+06 1.351E+06 1.351E+06 1.351E+06
0.1750 2.930E+00 2.236E-02 6.272E-02 5.121E+00 1.004E+00 1.004E+00 1.004E+00 4.889E+00 4.889E+00 2.235E+02 8.880E+03 -1.982E-03 3.376E-05 -2.691E-05 -5.946E-04 -4.038E-05 -4.667E-04 -5.946E-04 -4.038E-05 -4.667E-04 -2.078E-02 -1.414E+00 6.272E-02 -2.416E-01 -1.447E-01 -1.058E+00 1.262E-01 -6.419E+00 1.475E+01 3.048E+00 -3.595E-03 -2.766E-03 -5.264E-04 1.994E-03 -2.640E-03 -6.489E-05 1.994E-03 -2.640E-03 -5.969E-05 -9.318E-02 -9.703E-03 -8.701E-03 -1.431E+00 6.324E-02 -9.249E-02 4.563E+04 4.865E+00 3.210E+01 1.912E+00 2.185E-01 4.354E+03 8.881E+03 3.971E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -7.018E+05 -2.342E+05 2.057E+08 -5.946E-04 -4.038E-05 -4.667E-04 2.435E+06 2.414E+06 2.428E+06 1.350E+06 1.351E+06 1.351E+06
0.2000 2.926E+00 1.722E-02 5.434E-02 5.856E+00 1.006E+00 1.006E+00 1.006E+00 4.913E+00 4.913E+00 2.121E+02 8.921E+03 -1.926E-03 -1.193E-04 -3.976E-05 -4.693E-04 2.517E-05 -7.106E-04 -4.693E-04 2.517E-05 -7.106E-04 -1.639E-02 -1.530E+00 -1.188E-01 -2.565E-01 -2.719E-01 -6.510E-01 1.746E-01 -3.583E+00 1.750E+01 8.693E-01 -6.385E-03 -3.008E-03 -7.829E-04 -1.063E-03 -3.334E-03 -6.640E-05 -1.062E-03 -3.334E-03 -7.223E-05 -1.307E-01 -1.050E-02 -1.099E-02 -1.549E+00 -1.184E-01 -9.519E-02 4.565E+04 4.868E+00 3.387E+01 1.814E+00 2.265E-01 4.374E+03 8.879E+03 3.941E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -8.056E+05 -1.606E+05 2.059E+08 -4.693E-04 2.517E-05 -7.106E-04 2.444E+06 2.404E+06 2.420E+06 1.350E+06 1.350E+06 1.350E+06
0.2250 2.923E+00 1.209E-02 4.595E-02 6.594E+00 1.008E+00 1.008E+00 1.008E+00 4.928E+00 4.928E+00 2.280E+02 8.954E+03 -1.630E-03 -3.106E-04 -5.446E-05 -2.190E-04 1.082E-04 -1.023E-03 -2.189E-04 1.082E-04 -1.023E-03 -1.129E-02 -1.537E+00 -3.137E-01 -2.577E-01 -3.153E-01 -2.043E-01 1.624E-01 1.316E-01 1.788E+01 -1.623E+00 -1.014E-02 -3.330E-03 -1.102E-03 -5.811E-03 -4.220E-03 -5.358E-05 -5.810E-03 -4.220E-03 -7.854E-05 -1.697E-01 -1.621E-02 -1.334E-02 -1.555E+00 -3.134E-01 -9.563E-02 4.568E+04 4.876E+00 3.543E+01 1.738E+00 2.357E-01 4.387E+03 8.877E+03 3.912E-01 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 -8.020E+05 -5.963E+04 2.059E+08 -2.189E-04 1.082E-04 -1.023E-03 2.454E+06 2.394E+06 2.411E+06 1.350E+06 1.350E+06 1.350E+06
0.2500 2.920E+00 6.957E-03 3.757E-02 7.334E+00 1.011E+00 1.011E+00 1.011E+00 4.932E+00 4.932E+00 2.702E+02 8.978E+03 -1.091E-03 -5.182E-04 -7.038E-05 1.589E-04 1.984E-04 -1.406E-03 1.589E-04 1.984E-04 -1.406E-03 -7.230E-03 -1.434E+00 -4.657E-01 -2.454E-01 -2.655E-01 2.227E-01 9.143E-02 3.713E+00 1.593E+01 -3.730E+00 -1.485E-02 -3.850E-03 -1.485E-03 -1.226E-02 -5.355E-03 -2.728E-05 -1.226E-02 -5.355E-03 -7.790E-05 -2.075E-01 -2.636E-02 -1.573E-02 -1.451E+00 -4.655E-01 -9.423E-02 4.572E+04 4.888E+00
Best Regards,
Dear @Ines.Baptista,
I noticed AeroDyn output RtTSR is quite high for this rotor (over 20). Can you add AeroDyn output RtAeroCt; what is that doing over the first FAST.Farm time step (13 seconds)?
Best regards,
Dear @Jason.Jonkman ,
I am using the IEA Wind 15 Megawatt wind turbine, with a wind speed equal to 3.5 m/s, which I believe should lead to a TSR of around 20. The output for this wind speed leads to around that value.
The time response for RtAeroCt can be found in the following figure:
Best regards,
Dear @Ines.Baptista,
Thanks for sharing.
I’m not sure, but I’m concerned that the large start-up transient could be causing problems in FAST.Farm. I would first suggest initializing your OpenFAST model better for the conditions you are simulating. At 3.5 m/s, this would mean initializing RotSpeed to 5 rpm and BlPitch to 4degrees for the IEA Wind 15-MW reference wind turbine. How do the OpenFAST and FAST.Farm results look then?
Best regards,
Dear @Jason.Jonkman ,
I have updated the RotSpeed to 5 rpm and BlPitch to 4degrees, and the RtAeroCt looks like this:
However, the RtCtAvgT1 is still 0 after the first seconds:
Could you explain what is the main difference between RtCtAvgT1 and RtAeroCt please? Thank you.
Best regards,
Dear @Ines.Baptista,
Thanks for sharing. AeroDyn output RtAeroCt for T1 looks reasonable now, but FAST.Farm output RtCtAvgT1 is still incorrect. To clarify the difference between these two outputs:
RtAeroCtis the instantaneous aerodynamic thrust coefficient of a rotor as computed by AeroDyn for a given OpenFAST modelRtCtAvgT1is the low-pass time-filtered value of the rotor thrust coefficient as computed by FAST.Farm for turbine T1. To compute this, the rotor thrust distribution from OpenFAST is passed to FAST.Farm, which is then low-pass time filtered and spatially averaged.
I’m still not sure why RtCtAvgT1 is incorrect, but I’m wondering if it is tied to the low-pass time filter. Can you try reducing f_c from DEFAULT to something small, such as 0.0007 Hz? Another thing to try is reducing DT_Low from 13 s to something smaller like 1 s.
Best regards,
Dear @Jason.Jonkman ,
Thank you for the clarification.
I tried reducing f_c to 0.0007 Hz and reducing DT_Low to 1 s (both individually and then at the same time) but the RtCtAvgT1 is still 0.
I think i am going to work with RtAeroCt computed by AeroDyn, but thank you for all the help and quick responses!
Best Regards,
Dear @Ines.Baptista,
Weird.
Are you seeing an impact from the upstream turbine on the downstream turbine? Have you tried visualizing the wake (e.g., by setting NOutDisWindXY = 1? If so, are you seeing a wakes?
Best regards,
Dear @Jason.Jonkman ,
I believe so, both the thrust and power of the second turbine are lower.
The wake looks like this (after 200 seconds):
Best regards,
Dear @Ines.Baptista,
I looked at the source code and believe there is a bug in that the output RtCtAvgT# is not set properly for the polar wake model after time zero. This doesn’t seem to have any downstream effect other than the incorrect RtCtAvgT# output. We’ll get this fixed in a future release.
Thanks,
I’ve now posted this bug on OpenFAST issues: Bug report: FAST.Farm Output RtCtAvgT# Not Set After Initialization for the Polar Wake Model · Issue #2962 · OpenFAST/openfast · GitHub. Thanks for reporting it.
Best regards,
Dear @Ines.Baptista,
Thanks for reporting this issue. This has been corrected and will be included in the v4.2.0 release coming out next week.
Bugfix pull request here: WD: Ct_avg was not set when polar wake used giving RtCtAvgT by andrew-platt · Pull Request #3145 · OpenFAST/openfast · GitHub
Regards,