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Specifying axis of rotation

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Old   August 14, 2007, 05:19
Default Specifying axis of rotation
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David Banks
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Hi everyone

I have a turbine model whose axis of rotation is parallel with the X-axis (it sits 10m above it).

When you are choosing values for your fluid zone/wall, how do you specify where the axis is? I am inputting a unit vector value of 1 in the X tab but this isnt relating to the real axis

Any help would be great

David
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Old   August 15, 2007, 04:22
Default Re: Specifying axis of rotation
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tom
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I had the same problem, but the rotation axis wasn't even parallel to one of those in Fluent. So i went back and created the geometry again. But in your case I think it is not necessary. Try to specify the rotation-axis origin.in order to do this you must pick any point on your axis and check its coordinates.
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Old   August 15, 2007, 05:14
Default Re: Specifying axis of rotation
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David Banks
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Tom

How do I specify the rotation axis origin? Is this done in Fluent?
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Old   August 15, 2007, 05:50
Default Re: Specifying axis of rotation
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tom
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yes in Fluent, define -> boundary conditions -> zonename ->

you will open the window for defining boudary conditions for the zone you are interested in. rotation-axis origin panel is just next to rotation-axis direction panel.
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