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April 17, 2010, 00:17 |
Reversed flow in Vertical axis wind turbine
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#1 |
New Member
Join Date: Feb 2010
Posts: 24
Rep Power: 16 |
Hi,
I am working on my thesis that involves a 2D simulation of a Vertical axis wind turbine. I first made a rotating mesh surrounded by a stationary mesh in ICEM CFD and then applied periodicity in FLUENT. I got it rotating in Fluent but getting a reversed flow at the Pressure outlet. can anyone pls help me out with this problem? I tried to play with the backflow turbulent intensity and viscosity ratio but ended up with the same problem again. The inner circle (Wind turbine with 3 airfoils) is Rotating at 1500 RPM counter-clockwise and outer rectangle is a stationary farfield. there are 2 zones Far_surface.1 (stationary zone) & rotor_surface.1 (rotating zone). operating pressure is set to be 1 atm. I can even email my case/data file if somebody is interested to have a close look at the problem. Thank you so much in advance Last edited by jola; January 5, 2012 at 12:05. |
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August 25, 2010, 18:30 |
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#2 |
Senior Member
Steve Hansel
Join Date: Jun 2009
Location: Colorado, USA
Posts: 112
Rep Power: 17 |
You have probably solved your problem long ago, but I thought I would make a suggestion anyway. I do 2d VAWT simulations in openfoam and for a 1m diameter turbine, I have to make the wind tunnel 20m x 20m or back pressure in the tunnel really affects the results. I'm sjh7132 on YouTube if you want to see some of my work.
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April 11, 2012, 04:13 |
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#3 |
Senior Member
cfdkid
Join Date: Mar 2009
Posts: 133
Rep Power: 17 |
@Hansel
Seen your work on youtube. good work. Are you still in touch with OpenFOAM? Seek your suggestions on implimenting VAWT model for blades of 1 meter length. Regards CFDkid Last edited by kid; April 11, 2012 at 04:14. Reason: just |
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