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ROE-TURKEL Preconditioning

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Old   July 29, 2013, 06:34
Post ROE-TURKEL Preconditioning
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Akash Chaudhari
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Hi,
I have seen Roe-Turkel preconditioning being mentioned in one of the pictures at SU2's twitter account for low mach numbers. I was wondering how to enable it.
I tried specifying the following in the initial portion of config file for the simulation problem definition(got the clue from Cconfig class)
Code:
ROE_TURKEL_PREC= YES
But this doesn't seem to work and the history graph with and without the preconditioning show the same trend. Or should I change the default false value in the source code and recompile it for the time being.

I am trying an external aerodynamic case using a mach no. of 0.062, using the incompressible formulation I obtained pretty descent results and was hoping for a better correlation with the preconditioning turned on.

Please correct me if I am going wrong.
Akash
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Old   August 19, 2013, 16:09
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Thomas D. Economon
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Hi Akash,

Roe-Turkel preconditioning (ROE_TURKEL_PREC= YES) is set up to work with the compressible solver only when choosing also the Roe method for computing convective fluxes (CONV_NUM_METHOD_FLOW= ROE-1ST_ORDER or 2nd order).

Hope this helps!
Tom
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