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Regarding pressure projection method for unsteady viscous compressible flow

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Old   July 28, 2012, 06:15
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Paolo Lampitella
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Do you have access to this?

Moureau, Berat, Pitsch (2007): An efficient semi-implicit compressible solver for large-eddy simulations. Journal of Computational Physics 226

There you will find useful references on the projection method for incompressible (costant and variable density) flows, plus you will see how the method is adapted to handle some acoustic features.

However, i repeat it, it is very unlikely that the pressure-velocity coupling is causing you troubles in handling shocks. Indeed, i suggest you to actually use your current method (however the PISO from the Jasak's lecture notes is probably a better option than the SIMPLE) and look for something else causing your problems.

Still, i realize from you posting the Jasak's notes, that the modifications needed by a segregated solver to handle compressible flows are new to you. So, i guess if they are also new to your senior... in that case there could really be a problem in your SIMPLE implementation.
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Old   July 28, 2012, 06:55
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Originally Posted by avinash87 View Post
Then will you please guide me about classical pressure projection method for the same....? My senior did the same with SIMPLE algorithm and he got the results but method failed to capture shocks with good resolution. So i have to verify that whether pressure projection method can do better or not.

a failure in capturing schock with good resolution does not necessarily depends on the failure of the algorithm for compressible flows... maybe your spatial (and temporal) discretization is simply not good enough for problem with discontinuity
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