model Validation

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Jason.Jonkman
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Re: model Validation

Postby Jason.Jonkman » Mon Nov 16, 2020 9:28 am

Dear Satish,

I would say that you've already verified your model. That is, you compared your results to another similar solution and got reasonable agreement, and the differences between the two solutions are explainable (differences in aerodynamic implementation).

Validation of your model would involve checking your solution against physical measurements or against a higher fidelity model (which I'm not sure exist for the NREL 5-MW turbine atop the OC3 monopile).

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov

Satish.Jawalageri
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Re: model Validation

Postby Satish.Jawalageri » Mon Nov 16, 2020 9:32 am

Dear Jason,

Thanks for your reply.

I will have a look, thanks!

Thanks,
Satish J

Satish.Jawalageri
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Re: model Validation

Postby Satish.Jawalageri » Tue Nov 24, 2020 2:28 am

Dear Jason,

Could I get the files of OC4 for verification of my model.

Thanks,
Satish J

Jason.Jonkman
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Re: model Validation

Postby Jason.Jonkman » Wed Nov 25, 2020 7:53 pm

Dear Satish,

Are you referring to the various simulation results from Phase I and Phase II of the OC4 project? These are available on the following Google drive: https://drive.google.com/drive/folders/ ... EZLdDRxX2s.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov

Georgia.Tsoukleri
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Re: model Validation

Postby Georgia.Tsoukleri » Fri Feb 26, 2021 8:55 am

dear Jason,
im using FAST v8.16 and Aerodyn v15 but i want to switch to Aerodyn v14
i found in some posts here the input file for Aerodyn v14 and i changed compaero to 1 in FAST v8.16 input file but im receiving the following

FAST_InitializeAll:ED_Init:ED_ReadInput:ReadBladeInputs:ReadBladeMeshFileAD:Invalid numerical
input for file ".\5MW_Baseline/NRELOffshrBsline5MW_OC3Hywind_AeroDyn.dat" occurred while trying
to read BldNodes.
Do i have to make more changes or i need more files for Aerodyn v14 that dont exist in FASTv8.16 archive that i have downloaded?

Jason.Jonkman
Posts: 5766
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
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Re: model Validation

Postby Jason.Jonkman » Fri Feb 26, 2021 9:55 am

Dear Georgia,

It sounds like there is a formatting problem in your AeroDyn v14 input file. Please note that when using AeroDyn v14, ElastoDyn (ED) reads the AeroDyn v14 input file to obtain the blade discretization. (This is not the case when using AeroDyn v15, whereby ElastoDyn and AeroDyn can have independent blade discretizations.)

Regardless, an AeroDyn v14 input for the NREL 5-MW baseline wind turbine is provided as NRELOffshrBsline5MW_AeroDyn_Equil_noTwr.dat in the CertTest/5MW_Baseline directory of the FAST v8.16 archive.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov


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