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A convergence issue of RAE2822 airfoil

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Old   May 11, 2016, 09:27
Angry A convergence issue of RAE2822 airfoil
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Li Ji
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Hi,
I am suffering a problem about the convergence of RAE2822 airfoil. The test case is "/TestCases/rans/rae2822" of SU2. The version of SU2 used is
"4.0.2".
In the configure file "turb_SST_RAE2822.cfg", the option "UNSTEADY_SIMULATION" is set as "UNSTEADY_SIMULATION=NO". This
option implies the local time strategy. With this option, the test case
works well.
The problem is that I do not want to use the local time strategy. I set
"UNSTEADY_SIMULATION" as "UNSTEADY_SIMULATION=TIME_STEPPING".
The case can not be convergent, or it can be convergent very slowly.
Is there any ways which I can use to accelerate the convergence, if I do not want to use the local time strategy. Any helps are appreciated.

In the configure file:
TIME_DISCRE_FLOW= EULER_IMPLICIT

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