# Wind Farm - Fast

**URL:** <https://forums.nlr.gov/t/wind-farm-fast/1710>\
**Category:** Wind Farm Modeling\
**Created:** [October 17, 2017, 1:59pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710 "2017-10-17T13:59:54Z")\
**Posts on this page:** 12\
**Page:** 1

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**Author:** ![Federico.Cordo](https://avatars.discourse-cdn.com/v4/letter/f/ccd318/32.png) [@Federico.Cordo](https://forums.nlr.gov/u/Federico.Cordo)\
**Post date:** [October 17, 2017, 1:59pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/1 "2017-10-17T13:59:54Z")

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Hello everybody,

I have the following problem: I would like to design a simple control for two turbines, using the output data of the first one as the inflow of the second one. Is it possible to run a simulation using FAST, including the two turbines and independent control for the two turbine? (In simulink using S-Func would be great.)

Best regards,  
Federico

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**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:** [October 17, 2017, 3:15pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/2 "2017-10-17T15:15:08Z")

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Dear Federico,

FAST standalone cannot be used to model two turbines, but NREL has developed SOWFA and the soon-to-be-released FAST.Farm tool for that purpose. And UMass developed DWM. More information e.g. at: [Simulating two turbines (one behind the other) - #14 by Jason.Jonkman](http://forums.nlr.gov/t/simulating-two-turbines-one-behind-the-other/1168/14).

That said, neither SOWFA, DWM, or FAST.Farm support an interface to Simulink.

Best regards,

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**Author:** ![Federico.Cordo](https://avatars.discourse-cdn.com/v4/letter/f/ccd318/32.png) [@Federico.Cordo](https://forums.nlr.gov/u/Federico.Cordo)\
**Post date:** [October 17, 2017, 5:32pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/3 "2017-10-17T17:32:36Z")

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Dear Jason,

Thank you for your answer. News on FAST.farm? I have seen that the expected release was scheduled for September.

Best regards,  
Federico.

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**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:** [October 17, 2017, 5:43pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/4 "2017-10-17T17:43:00Z")

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Dear Federico,

We are currently working on calibrating and validating FAST.Farm against high-fidelity modeling (SOWFA) results before the first public release. We were originally planning for the public release at the end of September, 2017, but we are not as far along with the validation as we’d like. Now I’m expecting the first public release later this fall.

Best regards,

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**Author:** ![Elham.Tofighi](https://avatars.discourse-cdn.com/v4/letter/e/46a35a/32.png) [@Elham.Tofighi](https://forums.nlr.gov/u/Elham.Tofighi)\
**Post date:** [February 15, 2019, 2:58am UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/5 "2019-02-15T02:58:30Z")

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Dear Jason,

I was wondering how I can download the FAST.farm code frmo NREL’s website (is there a donwload link?). Could you please advise?

Also, are there any manuals, documents or instructions on how to work with it?

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**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:** [February 15, 2019, 3:20am UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/6 "2019-02-15T03:20:24Z")

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Dear Elham,

FAST.Farm has not yet been publicly released. See the following forum topic for more information: [FAST.Farm - #13 by Vahid.Fazlollahi](http://forums.nlr.gov/t/fast-farm/1887/13).

Best regards,

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**Author:** ![Narender.Singh](https://avatars.discourse-cdn.com/v4/letter/n/278dde/32.png) [@Narender.Singh](https://forums.nlr.gov/u/Narender.Singh)\
**Post date:** [December 12, 2019, 2:46pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/7 "2019-12-12T14:46:23Z")

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Dear Jason,

You mention in this response that neither SOWFA, DWM or FAST.Farm support an interface with Simulink. Are there plans to develop such interface in future?

Also, is there a way to run 5 MW offshore turbine through DWM, while controlling it externally through Simulink or else editing the internal FAST control algorithms to suit my needs?

regards,  
Narender Singh

> [@Jason.Jonkman](#):
>
> Dear Federico,
> 
> FAST standalone cannot be used to model two turbines, but NREL has developed SOWFA and the soon-to-be-released FAST.Farm tool for that purpose. And UMass developed DWM. More information e.g. at: [Simulating two turbines (one behind the other) - #14 by Jason.Jonkman](http://forums.nlr.gov/t/simulating-two-turbines-one-behind-the-other/1168/14).
> 
> That said, neither SOWFA, DWM, or FAST.Farm support an interface to Simulink.
> 
> Best regards,

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**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:** [December 12, 2019, 3:54pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/8 "2019-12-12T15:54:03Z")

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Dear Narender,

We would like to develop a Simulink interface for FAST.Farm at some point, but we are not currently funded to do that. Currently, FAST.Farm and SOWFA can accept controllers implemented through the other controller interfaces (i.e., simple built-in controllers, Fortran routines, or Bladed-style DISCON DLL). The super controller of FAST.Farm and SOWFA is based on an extension of the Bladed-style DISCON DLL.

NREL does not really support DWM, which will be deprecated soon.

Best regards,

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**Author:** ![Liye.Zhao](https://avatars.discourse-cdn.com/v4/letter/l/ccd318/32.png) [@Liye.Zhao](https://forums.nlr.gov/u/Liye.Zhao)\
**Post date:** [April 19, 2021, 5:09am UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/9 "2021-04-19T05:09:10Z")

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Dear Jason,

Could you please also share the prerelease with me?

regards,  
Liye Zhao

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**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:** [April 19, 2021, 8:39pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/10 "2021-04-19T20:39:24Z")

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Dear Liye.Zhao,

FAST.Farm has now been merged into the dev branch of OpenFAST ([github.com/OpenFAST/openfast/tree/dev](https://github.com/OpenFAST/openfast/tree/dev)). So, you can now find the source code, documentation, and sample models there. I’ll announce the release formally once FAST.Farm gets merged to the main branch of OpenFAST.

Best regards,

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**Author:** ![Jundong.Wang](https://avatars.discourse-cdn.com/v4/letter/j/45deac/32.png) [@Jundong.Wang](https://forums.nlr.gov/u/Jundong.Wang)\
**Post date:** [September 23, 2021, 1:50pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/11 "2021-09-23T13:50:29Z")

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Dear Jason,

I met annother problem recently. I try to use turbsim generate the ambient wind data(Binary TurbSim Full-Field files), i have no idea about some parameters ,such as NumGrid\_Z/Y ? When i set the following parameters (as i shown in the figure 1),

 ![file setting.png](https://europe1.discourse-cdn.com/nrel/original/2X/8/80b402211edb8b6b9f1aa5a0dd9148885d6aa5db.png) i can’t use this full-field file, can you give me some suggestions, please? ![error massage.png](https://europe1.discourse-cdn.com/nrel/original/2X/f/f3fcdd5025c6580e85ed86478c220164bd64a660.png)

In my understanding, the grid of turbsim should cover the grid set in ambient wind in the fstf file, right? This is equivalent to atmospheric turbulence covering the entire wind field?

Best regards,

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**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:** [September 23, 2021, 3:15pm UTC](https://forums.nlr.gov/t/wind-farm-fast/1710/12 "2021-09-23T15:15:31Z")

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Dear Jundong,

The access violation issue you are referring to seems identical to the one discussed on OpenFAST issues ([github.com/OpenFAST/openfast/pull/769](https://github.com/OpenFAST/openfast/pull/769), not yet migrated to main).

Regarding the use of TurbSim within FAST.Farm, with Mod\_AbmWind = 2, the same TurbSim field is used for both the low- and high-resolution domains of FAST.Farm and with Mod\_AmbWind = 3, different TurbSim fields are used for the low-resolution domain and for each high-resolution domain. More information on this, and guidance for using TurbSim in conjunction with FAST.Farm, are provided in the FAST.Farm User’s Guide and Theory Manual: [openfast.readthedocs.io/en/main … index.html](https://openfast.readthedocs.io/en/main/source/user/fast.farm/index.html).

Best regards,
