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Question about staggered grid SIMPLE high Mach number

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Old   December 20, 2021, 22:22
Post Question about staggered grid SIMPLE high Mach number
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Gao Shangya
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Hi everyone,
my name is Gao. I am now using staggered grid SIMPLE to simulate gas exchange. I have successfully simulated gas flow at low speed (Mach<0.3).When I increase the speed, the results are not reasonable.
I have searched some literature and there are some collocated grids with SIMPLE at high speed. But I want to know, it is possible to use staggered grid SIMPLE at high speed.
If you can give me some advice, I will be very grateful for your help.
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Old   December 21, 2021, 10:43
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Filippo Maria Denaro
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Quote:
Originally Posted by Harlotte View Post
Hi everyone,
my name is Gao. I am now using staggered grid SIMPLE to simulate gas exchange. I have successfully simulated gas flow at low speed (Mach<0.3).When I increase the speed, the results are not reasonable.
I have searched some literature and there are some collocated grids with SIMPLE at high speed. But I want to know, it is possible to use staggered grid SIMPLE at high speed.
If you can give me some advice, I will be very grateful for your help.



High Mach flows should be approached using density-based formulations. Usually, non-staggered grid is used.
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