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IEAWindTask37 / IEA-15-240-RWT

15MW reference wind turbine repository developed in conjunction with IEA Wind
Apache License 2.0
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Running problem with IEA-15-240-RWT-UMaineSemi Openfast model #156

Open yugao0912 opened 1 year ago

yugao0912 commented 1 year ago

Description

I was just trying to run the IEA-15-240-RWT-UMaineSemi OpenFAST code to verify the results from Orcaflex. Firstly, I made sure all the files were in the correct position, which could ensure the codes were running normally. So I just changed the TMAX in '.fst' file to 200s and download the Windows version of the controller file without any other actions. Fortunately, it terminated normally but there were many warnings. I am not sure about these problems.

Steps to reproduce issue

I follow the steps below:

  1. Download the model from the link https://github.com/IEAWindTask37/IEA-15-240-RWT
  2. Download the controller document 2.7.0 version https://github.com/NREL/ROSCO/releases/tag/v2.7.0
  3. Move the files to the correct position for running
  4. Change the TMAX to 200s to ensure the code is running normally

Current behavior

Running ElastoDyn. Running AeroDyn. Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 1, blade 1) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 2, blade 1) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 4, blade 1) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 5, blade 1) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 1, blade 2) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 2, blade 2) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 4, blade 2) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 5, blade 2) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 1, blade 3) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 2, blade 3) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 4, blade 3) Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 5, blade 3) Running InflowWind. Running HydroDyn.

Additionally, how should I adjust the parameters or choose the suitable theory when the Mach number exceeds 0.3?

Expected behavior

I am sorry that I just started to use OpenFAST. So I am inclined to understand the main reasons causing these warnings.

Thank you

Code versions

OpenFAST 3.5.0List versions only if relevant IEA 15MW Umaine 1.1.6 ROSCO libdiscon.dll 2.7.0

gbarter commented 1 year ago

Hello, please see this response on the OpenFAST forums.