hello everyone.
I want to implement the Taylor Green flow field in mfix, as shown in the following figure. Can developers provide some good suggestions? Or can you tell me if it is possible to achieve this in mfix by modifying UDF?
If I understand correctly, you want to set up an initial fluid flow and then follow its time-evolution. This should be achievable in MFiX with a UDF. See 10. User-Defined Functions — MFiX 24.4 documentation
usr0.f is called before the start of the run, you should be able to set the fluid velocity components u_g, v_g, and w_g (use fldvar) from there.
See tests/fluid/FLD04/usr0.f for an example where an initial flow is set up in this manner. And please let us know if you get any interesting results!
thank u so much ，cgw