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OpenFAST / openfast

Main repository for the NREL-supported OpenFAST whole-turbine and FAST.Farm wind farm simulation codes.
http://openfast.readthedocs.io
Apache License 2.0
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IEC deterministic wind profile #815

Closed SkyupChen closed 3 years ago

SkyupChen commented 3 years ago

Dear @jjonkman,

I was able to use IECwind to generate the IEC ECD+R.wnd file and use WindType = 2, the simulation run through, but when I plot the hub height x-wind speed, I got something complete different from the IEC wind profile should be. Please see the screen shot below.

ecdwind_iecwind

This plot is taken from variable name "Wind1VelX". Am I outputting wrong signal or is there something wrong with inflow input file?

I am using OpenFast version 2.5.

Many thanks in advance!

Best Regards,

jjonkman commented 3 years ago

Dear @SkyupChen,

You haven't stated what values you are using within IECWind, but what particularly are you concerned with?

ECD involves both a gust and direction change and you are only plotting the U-component of this event. Perhaps the ECD wind will make more sense if you plot both the U and V components, or alternatively, plot both the vector magnitude and direction?

Best regards,

SkyupChen commented 3 years ago

Dear @jjonkman,

I am sorry for the reply and many thanks for your help.

Ok, I managed to add the lateral wind speed and xy wind speed magnitude to the output list in InflowWInd file. Now I am able to plot xy wind speed magnitude and the result is right. I was referring to the old "OutPutParameters.xlsx' file and I did not find explanation about Wind1VelX, so I thought this is the hub wind speed magnitude. After I downloaded the new "OutPutParameters.xlsx" and I get to know xy is the right one.

Best Regards,