# DTU 10-MW Reference Wind Turbine **URL:** \ **Category:** Computer-Aided Engineering Software Tools\ **Created:** [September 15, 2014, 10:18pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993 "2014-09-15T22:18:21Z")\ **Posts on this page:** 15\ **Page:** 7
**Author:** ![Andre.White](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/andre.white/32/3094_2.png) [@Andre.White](https://forums.nlr.gov/u/Andre.White)\ **Post date:** [November 2, 2022, 11:47am UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/121 "2022-11-02T11:47:12Z")
Hi @Jason.Jonkman: For a fixed base offshore wind turbine, are the tower base moments (given in openfast output) acting where the tower meets the transition piece? Regards, AOAW ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [November 2, 2022, 12:14pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/122 "2022-11-02T12:14:27Z")
Dear @Andre.White, > For a fixed base offshore wind turbine, are the tower base moments (given in openfast output) acting where the tower meets the transition piece? Yes, at an elevation defined by ElastoDyn input `TowerBsHt`. Best regards, ---
**Author:** ![Andre.White](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/andre.white/32/3094_2.png) [@Andre.White](https://forums.nlr.gov/u/Andre.White)\ **Post date:** [November 2, 2022, 2:40pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/123 "2022-11-02T14:40:24Z")
Thanks @Jason.Jonkman. Regards, AOAW ---
**Author:** ![Kashyap.Subham](https://avatars.discourse-cdn.com/v4/letter/k/bbce88/32.png) [@Kashyap.Subham](https://forums.nlr.gov/u/Kashyap.Subham)\ **Post date:** [November 21, 2022, 10:34am UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/124 "2022-11-21T10:34:41Z")
Dear Sir, Have you run simulations with a monopile or a jacket? If yes, what monopile dimensions have you referred? Can you provide the recompiled dll? Thanks Subham ---
**Author:** ![Adarsh.Arya](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@Adarsh.Arya](https://forums.nlr.gov/u/Adarsh.Arya)\ **Post date:** [February 5, 2025, 9:52am UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/125 "2025-02-05T09:52:51Z")
Dear @Andre.White Could you please let me know whether your issue related to changes in the API between different versions of OpenFAST has been resolved? If so, would you be able to share the OpenFAST files for the DTU 10MW turbine that can run with the newer version of OpenFAST? That would be a great help. Thank you. ---
**Author:** ![Ashok.Jammi](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/ashok.jammi/32/5792_2.png) [@Ashok.Jammi](https://forums.nlr.gov/u/Ashok.Jammi)\ **Post date:** [June 6, 2025, 10:21am UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/126 "2025-06-06T10:21:55Z")
Hi NREL, I have used FAST 3.5.3 with ROSCO 2.7.0 to model the IEA-10MW wind turbine. Above the wind speed of 12 m/s, FAST is overestimating the GenPwr to 10.5 MW See the image below ![image](https://europe1.discourse-cdn.com/nrel/original/2X/0/04f622a98585611ee1bdea3129d7b6529cf4f09f.png) When run with FAST 4.0 and ROSCO 2.9.3 - it’s estimating correctly. GenPwr = 10 MW. I used the DISCON.IN files corresponding to the version of FAST and ROSCO as given this [repo](https://github.com/IEAWindSystems/IEA-10.0-198-RWT) Can you point me about what could be the reason ? Thank you, Ashok ---
**Author:** ![Daniel.Zalkind](https://avatars.discourse-cdn.com/v4/letter/d/5daacb/32.png) [@Daniel.Zalkind](https://forums.nlr.gov/u/Daniel.Zalkind)\ **Post date:** [June 6, 2025, 3:48pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/127 "2025-06-06T15:48:56Z")
Hi Ashok, Without more information (time series of generator torque and speed, and the associated DISCONs you used for each run), I cannot account for the difference. We always recommend using the latest version of tools, so it’s good to see the newer versions behaving as expected. If possible, I recommend using them. If not, I would see what has changed between the DISCON.IN files for each version. Best, Dan ---
**Author:** ![Ashok.Jammi](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/ashok.jammi/32/5792_2.png) [@Ashok.Jammi](https://forums.nlr.gov/u/Ashok.Jammi)\ **Post date:** [June 9, 2025, 1:50am UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/128 "2025-06-09T01:50:07Z")
Hi @Daniel.Zalkind , Can you please look into the files and see what has caused the change. The plot is for 25m/s steady wind. Here is the plot comparing generator torque. ![image](https://europe1.discourse-cdn.com/nrel/original/2X/3/3f6f36c2fda5c5cb704087223894939d7345310b.png) Plot comparing GenPwr ![image](https://europe1.discourse-cdn.com/nrel/original/2X/7/7bc815689d88992f38c8ac40fc100bb37b5341b1.png) DISCON.IN file for ROSCO 2.7.0 used with FAST 3.5.3 DISCON.IN file for ROSCO 2.9.4 used with FAST 4.0.0 are in the following link > **[DISCON - Google Drive](https://drive.google.com/drive/folders/1i5xy2-rD2nXmwx_HthnK8X8MDJS2xPtS?usp=drive_link)** Thank you, Ashok ---
**Author:** ![Daniel.Zalkind](https://avatars.discourse-cdn.com/v4/letter/d/5daacb/32.png) [@Daniel.Zalkind](https://forums.nlr.gov/u/Daniel.Zalkind)\ **Post date:** [June 9, 2025, 1:58pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/129 "2025-06-09T13:58:30Z")
Hi Ashok, The differences in this section seem relevant to your rated power offset. Since the new parameters work well, I would use those. Best, Dan ![image](https://europe1.discourse-cdn.com/nrel/original/2X/b/b230399f25cb53b8f8beb0d20ad973bdb09727a5.png) ---
**Author:** ![Ashok.Jammi](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/ashok.jammi/32/5792_2.png) [@Ashok.Jammi](https://forums.nlr.gov/u/Ashok.Jammi)\ **Post date:** [June 9, 2025, 2:32pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/130 "2025-06-09T14:32:30Z")
Hi @Daniel.Zalkind Thanks for the clarification ---
**Author:** ![Ashok.Jammi](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/ashok.jammi/32/5792_2.png) [@Ashok.Jammi](https://forums.nlr.gov/u/Ashok.Jammi)\ **Post date:** [June 13, 2025, 12:39pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/131 "2025-06-13T12:39:16Z")
Hi, The model provided in the repo runs well with Elastodyn But I want to use BeamDyn for more accuracy. But, looks like the BeamDyn blade file has only 19 stations whereas Elastodyn file has 30 stations. Is there are way to generate BeamDyn file with 30 stations. Opened an issue in the repo > > > Hi, > When running with BeamDyn - I am getting the following error > > !\[Image\](https…://github.com/user-attachments/assets/109dac87-501e-471f-8cb1-dbde594d231a) > > Is there any wrong with the mappings? For now - I tried by adjusting Elastodyn Blade for 19 nodes and removed some Airfoils in Aerodyn so that the number would be 19. When I try to run with this configuration - I get the following warnings ![image](https://europe1.discourse-cdn.com/nrel/original/2X/6/6ee56b617e91806fca026b4d89295558c4a81fb7.png) It’s 25 mps steady wind. I am running with FAST 4.0 These are only the warnings - But I couldn’t get them. Will the result be affected by this? ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [June 13, 2025, 1:07pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/132 "2025-06-13T13:07:10Z")
Dear @Ashok.Jammi, The mesh-mapping error you are receiving is not triggered because ElastoDyn, BeamDyn, and AeroDyn have different numbers of nodes. In ElastoDyn, the number of blade structural analysis nodes is determined by `BldNodes`, not `NBlInpSt`. The values entered at the `NBlInpSt` are interpolated to the structural analysis nodes. In BeamDyn, `station_total`, together with `refine`, determines the quadrature points, which are the blade structural analysis nodes. With `station_total` = 19 and `refine` = 2, you’ll have 37 structural analysis nodes. But again, this does not need to match the aerodynamic analysis nodes in AeroDyn. Regarding your ROSCO warnings, I would guess your ROSCO input file is not compatible with the version of the ROSCO dynamic library you are using. Changes to the ROSCO input file with each release are documented here: [6. API changes between versions — ROSCO 2.9.4 documentation](https://rosco.readthedocs.io/en/latest/source/api_change.html). Best regards, ---
**Author:** ![Ashok.Jammi](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/ashok.jammi/32/5792_2.png) [@Ashok.Jammi](https://forums.nlr.gov/u/Ashok.Jammi)\ **Post date:** [June 13, 2025, 1:17pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/133 "2025-06-13T13:17:13Z")
Thanks @Jason.Jonkman . Just changing the NBlNodes and BldOuts out worked. Thank you, Ashok ---
**Author:** ![Ashok.Jammi](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/ashok.jammi/32/5792_2.png) [@Ashok.Jammi](https://forums.nlr.gov/u/Ashok.Jammi)\ **Post date:** [June 13, 2025, 3:26pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/134 "2025-06-13T15:26:11Z")
But then why was mesh mapping error occurring when NBlNds was 30, where BeamDyn was creating 37 nodes ? Why is it resolved with setting NBldNds to 19 in AeroDyn blade. When I change only Elastodyn “BldNodes” to 19 which was earlier set to 50, I get the error ![image](https://europe1.discourse-cdn.com/nrel/original/2X/c/c3831b5f6b7be74ff99bab9d212a11d9b925c69e.png) ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [June 13, 2025, 10:43pm UTC](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993/135 "2025-06-13T22:43:42Z")
Dear @Ashok.Jammi, An error regarding `BD_2_AD_BladeMotion` is an error in the spatial mesh mapping between BeamDyn and AeroDyn for the motions sent from BeamDyn to AeroDyn. My guess is with the precurve of this blade, there is a small incompatibility between the structural and aerodynamic meshes and eliminating or adding some nodes resolves or triggers the issue. From the issue you opened on the IEAWindSystems repository, it sounds like Mayank and Pietro will look into it. FYI: ElastoDyn’s input `BlDNodes` is not used when BModes is enabled. Best regards, [Previous page](https://forums.nlr.gov/t/dtu-10-mw-reference-wind-turbine/993.md?page=6)