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unicfdlab / hybridCentralSolvers

United collection of hybrid Central solvers - one-phase, two-phase and multicomponent versions
GNU General Public License v3.0
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Max Mach number? #49

Open burgreen opened 1 year ago

burgreen commented 1 year ago

I am wanting to simulate hypersonic flow (Mach 6) past a winged vehicle. Will hybridCentralSolvers handle such high Mach numbers? If not, will the QGDSolvers handle such?

Thanks.

mkraposhin commented 1 year ago

Hi, my experience has shown that hybridCentralSolvers works with stable w/ Ma <= 5 and TVD schemes. When Ma > 5, then it's better to use upwind schemes. You can use schemes that switch depending on a local Mach number value.

QGD solvers (QGDFoam) were tested for up to M=100. However, this approach requires decrease of time step for high Ma numbers.