
Lesson 15: Query regarding pressure based vs density based solvers
Hi everyone,
I am currently finishing my assignment for lesson 15 where I try out different solvers to simulate the flow over a geometry.
The geometry I chose was a NACA2412 aerofoil and I gave the inlet flow velocity as 200 m/s.
I tried different solvers as mentioned in the lesson video such as pressurebased (coupled, SIMPLE, PISO) and densitybased solvers. However, I just wanted some validation to check if my answers were correct.
My solution converged for pressurebased solvers (coupled and SIMPLE) but diverged for pressurebased PISO and densitybased solvers. It would be really helpful if someone could explain why is that the case that is diverged for only PISO in the pressurebased solver and for the densitybased solver.
I am attaching my residual PNG files as a reference.
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