# rotation axis?

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 December 3, 2000, 00:11 rotation axis? #1 Max Guest   Posts: n/a I am simulating 2-phase flow "water and air" in a 90 degree pipe. How to define the rotation axis origin and rotation axis direction of fluid under boundary condition?

 December 3, 2000, 05:17 Re: rotation axis? #2 Harry Guest   Posts: n/a Is your pipe rotate?? i dont think you shoud rotate your pipe

 December 3, 2000, 05:18 Re: rotation axis? #3 Harry Guest   Posts: n/a Is your pipe rotate??

 December 3, 2000, 13:13 Re: rotation axis? #4 Max Guest   Posts: n/a my pipe do not rotate. That's why i wonder what is the "rotation axis origin and direction" of fluid under boundary condition.

 December 5, 2000, 00:51 Re: rotation axis? #5 Harry Guest   Posts: n/a sorry, make you wait if you set motion type to stationary ,leave that to 0 if you set motion type to Moving reference frame, you need to specify your rotation axis. origin-------> set to 0 for all x,y,z direction----> set -1 (clockwise direction) or 1 for your rotation axis (for example y to -1) god luck

 December 5, 2000, 05:53 Re: rotation axis? #6 Max Guest   Posts: n/a Harry, My motion type is Stationary.So, you have solved my doubt.Thank you very much for your advice. Max

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