2D VAWT forces calculation

Lawrence1 · May 26, 2020, 06:24

Hello foamers,
I'm relatively new to OF and I am wondering how to get lift, drag coeffs, forces and moments on a simple rotating Savonius 2D VAWT. I am using MRFProperties to get the rotating effect. I am using simpleFoam solver.
If someone knows how to get the forces I would be very grateful.
Thanks!

Lawrence1 · May 26, 2020, 12:07

I forgot to post my case file, so here is the link to it:

https://drive.google.com/file/d/1cbj...ew?usp=sharing

Pablo2120 · May 29, 2020, 00:17

I made it trough paraview. Check this video

https://www.youtube.com/watch?v=J944HOj_4b0

If you want to know the lift and drag force/coefficent in just one paddle you should model that paddle separatedly from the axis. Then use the filter extract block in paraview BEFORE use the method shown in the video.

I hope it helps you.

Regards,

Pablo.

May 26, 2020, 06:24	2D VAWT forces calculation	#1
Lawrence1 New Member Join Date: May 2020 Posts: 2 Rep Power: 0	Hello foamers, I'm relatively new to OF and I am wondering how to get lift, drag coeffs, forces and moments on a simple rotating Savonius 2D VAWT. I am using MRFProperties to get the rotating effect. I am using simpleFoam solver. If someone knows how to get the forces I would be very grateful. Thanks!

May 26, 2020, 12:07	my VAWT case file	#2
Lawrence1 New Member Join Date: May 2020 Posts: 2 Rep Power: 0	I forgot to post my case file, so here is the link to it: https://drive.google.com/file/d/1cbj...ew?usp=sharing

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May 29, 2020, 00:17		#3
Pablo2120 New Member Pablo Join Date: Feb 2020 Location: Santiago de Chile Posts: 8 Rep Power: 6	I made it trough paraview. Check this video https://www.youtube.com/watch?v=J944HOj_4b0 If you want to know the lift and drag force/coefficent in just one paddle you should model that paddle separatedly from the axis. Then use the filter extract block in paraview BEFORE use the method shown in the video. I hope it helps you. Regards, Pablo.