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wind rotor problem in Fluent

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Old   January 2, 2011, 10:30
Default wind rotor problem in Fluent
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I'm doing simulations of rotating Savonius wind rotor in transient problem

I do that using k-e model, moving mesh and caculate cp by the average torque value of a round rotating

but the cp are always lower than experiment values from a reference paper

it's no use by increasing the domain or higher the number of grids

how to setting the scheme in this problem or what can I do for this?

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Old   January 10, 2011, 10:42
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first of all are you making 2d or 3d simulations?
How have you choosen the turbulence modeling?Intensity and lenght scale?
Is your timestep ok?
I am asking this because all of these factors influences the result of your simulation.
If you haven't done,give a look at this thread : Setting condition on a VAWT , it gave me a lot of answers.
Hope to be helpful.
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