[maddy11]

Hi all,

I'm trying to simulate the flow in a supersonic cavity using Rhocentralfoam solver. But the flow is not started even after 0.00011 s when I view the same in Paraview. My mesh contains 30000 cells in cavity and total 80000 cells. I'm using the Kurganov flux scheme. I'm an Openfoam beginner. Kindly help and let me know if more details are needed!

[pete20r2]

Originally Posted by maddy11

Hi all,

I'm trying to simulate the flow in a supersonic cavity using Rhocentralfoam solver. But the flow is not started even after 0.00011 s when I view the same in Paraview. My mesh contains 30000 cells in cavity and total 80000 cells. I'm using the Kurganov flux scheme. I'm an Openfoam beginner. Kindly help and let me know if more details are needed!

If you can, share your case or more information or there isn't much the forum can help with

[clapointe]

A quick thought before looking at the full case -- many of the rhoCentralFoam tutorials are inviscid. Assuming the cavity flow is lid driven, this is a shear-driven flow meaning that you cannot solve the inviscid problem.

Caelan

[maddy11]

@Caelan: This is not lid driven cavity. But it is a simulation of an open cavity at Mach 2.0. The shear layer is required to reattach at the cavity rear wall. I have a thesis paper on deep cavity simulation that was done in Rhocentralfoam. That is why I have adapted this solver.

Here is the link: https://fenix.tecnico.ulisboa.pt/dow...638/Thesis.pdf

Kindly tell me if the solver can handle this type of flow.

Maddy

[clapointe]

To be clearer -- make sure that you are solving a viscid problem with rhoCentralFoam when you care about shear/viscous effects. Check to make sure that nu/mu is not set to zero in thermophysicalProperties. Otherwise, as mentioned previously, we will need to see the full case to help diagnose a problem.

Caelan

[maddy11]

Hi Caelan,
Yes, the viscosity value is not zero in my case. I'm able to run the simulation now.
Maddy