Learning Forum

[JordanT]

I am running a simulation and want to have fluid flowing over a rotating solid disk in planar mode as shown below. I don't know how to determine which way the solid is going to rotate and even if it is rotating at all. Fluent doesn't easily allow me to know. Can someone help me how to find this out? I would like to rotate the solid counter-clockwise at some RPM value. Thank you in advance for your help.

[DrAmine]

If 2d always rotate along z direction (in plane). That us why it is greyed out.

[JordanT]

Thank you, 

 

I assume you mean according to the right hand rule; therefore, if I was to spin the circle at 10 rpm, it would be spinning at 10 rpm in the clockwise direction because the z-axis in Fluent points into the screen. Thanks, 

 

Jordan Trakas

[DrAmine]

Mark this as is solved so that other benefits from it.

[JordanT]

Sure, 

I'll mark it as solved after you explicitly answer one more question... "Does the z-axis in Fluent point into the screen or out of the screen?" It is still not clear to me.

[Rob]

Try it and see? It's probably out of the screen, but without testing I can't remember. 

[DrAmine]

Yes try and see. It should be the right hand rule.