Learning Forum

[cs437]

For symmetric geometry, the SRF could be applied; however, the centrifugal force or non-intertial term needs to be introduces. Therefore, I would like to know how to apply centrifugal force in this case. Because for SRF, wall is moving although it is opposite to the actual system.

Does ANSYS Fluent has a function that the centrifugal force can be added? 

 

Best regards,

 

[Rob]

What applies the force in your model? Ie what are you modelling?

[cs437]

I try to model mixing stirred tanks. For SRF, the wall is moving, which is opposite to the actual system. That is why I need to take an account of centrifugal force or introduce non-inertial term into the modeling. Do you have any options on ANSYS Fluent on that? Please suggest.

 

Best regards,

[cs437]

I try to model mixing stirred tanks. For SRF, the wall is moving, which is opposite to the actual system. That is why I need to take an account of centrifugal force or introduce non-inertial term into the modeling. Do you have any options on ANSYS Fluent on that? Please suggest

 

[cs437]

Hi, 

 

I would like to know how to decide to do SRF or MRF when the problem is symmetry and no stationary parts (i.e., baffle, outlet) in the tank. I found a lot of paper preferred to do MRF instead even in symmetry case. Is the velocity solver different since SRF we stand in the impeller position so it will be relative velocity instead of absolute velocity in most cases? Another question is to do periodic boundary instead of full simulation. What are the disadvantages and advantages? I noticed that this should save more cells and simulation time and we can mirror the result at post-processing. What else besides those? If doing periodic, how do we define a boundary condition at the the top surface since it is no longer symmetry boundary condition?

 

Thank you.

 

Best regards,

 

Chadakarn