Author Topic: Tips for converging a highly compressible case using the segregated solver  (Read 3044 times)

Offline william

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This solution contains a suggested procedure to converge highly compressible flow cases with the segregated solver.
-use incompressible (consant density)
-use default limits (Solver-> Controls->Limits)
-use default discretization and underrelaxations (Solve->Controls->Solution)
-use default Multigrid Solver settings (Solve ->Controls->Multigrid)
-initialize at average pressure
-iterate to converge (may change URF)

-change to ideal-gas law
-Report->Volume Integrals
Take volume-avage of static pressure
Patch pressure ONLY to the average value.
It should converge nicely.
-you may continue with 2nd-order flow