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October 6, 2018, 09:36 |
Flow in a supersonic cavity - RhoCentralFoam
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#1 |
Member
madz
Join Date: Sep 2018
Posts: 34
Rep Power: 8 |
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! |
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October 6, 2018, 10:13 |
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#2 | |
Senior Member
Peter Baskovich
Join Date: Jul 2014
Posts: 127
Rep Power: 12 |
Quote:
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October 6, 2018, 14:05 |
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#3 |
Senior Member
Join Date: Aug 2015
Posts: 494
Rep Power: 15 |
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 |
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October 8, 2018, 02:44 |
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#4 |
Member
madz
Join Date: Sep 2018
Posts: 34
Rep Power: 8 |
@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 |
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October 8, 2018, 13:15 |
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#5 |
Senior Member
Join Date: Aug 2015
Posts: 494
Rep Power: 15 |
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 |
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October 10, 2018, 01:05 |
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#6 |
Member
madz
Join Date: Sep 2018
Posts: 34
Rep Power: 8 |
Hi Caelan,
Yes, the viscosity value is not zero in my case. I'm able to run the simulation now. Maddy |
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