Reference frame to simulate rotation of a propeller
Hello all!
I'm new running with this software so I have a doubt.
I want to simulate the rotation of a propeller. So I import the propeller's geometry and then make a cylinder surrounding it. Then I subtract the propeller volume from the cylinder with Boolean>Subtract>Target-Cylinder + Tool-Propeller and set air as material. Then I use a reference frame (steady), selecting the surfaces of the propeller's previous volume as the moving body, and the axis. Then I run the simulation and I obtain this velocity contour.
It seems to be a photo of an initial instant of a transient simulation instead of a steady result.
Does anyone know why is this happening?
Thank you!
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Altair Employee
If you've applied the reference frame to the surfaces only, the extent of the effect is quite local to the surfaces. Typically for a rotating body we would apply the reference frame to the solid body surrounding the rotating faces as well. (In HyperWorks CFD select the solid - the fluid body - and make sure 'Include Bounding Surfaces' is active.) I suggest you redefine the reference frame following that guideline and this tutorial:
https://help.altair.com/hwcfdsolvers/acusolve/topics/tutorials/acu/acu_5000_intro_cfd_c.htm#acu_5000_intro_cfd_c