Comparison of rhoSimpleFoam (OF-2.3.0 v.s. foam-extend-3.2)

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I compared rhoSimpleFoam of OF-2.3.0 and foam-extend-3.2.

test body: Ahmed body (35 degrees slant)
wind velocity: 60 m/s
turbulence model: SA-neg with Spalart-Shur correction and compressibility correction

Test cases and results:

Cp: drag coefficient from pressure[1]
Cr: drag coefficient from viscosity[1]
Cd: total drag coefficient
Cl: total lift coefficient

Experimental data was quoted from [2]

The difference of snappyHexMesh between OF-2.3.0 and foam-extend-3.2 can be confirmed here.

Visualization:

Cp of Case 2

Cp of Case 3

Streamline of Case 2

Streamline of Case 3

Umag of Case 2

Umag of Case 3

nuTilda of Case 2

nuTilda of Case 3

References
1. S.R. Ahmed, G. Ramm, Some Salient Features of the Time-Averaged Ground Vehicle Wake, SAE-Paper 840300, 1984.
2. S. Möller, D. Suzzi, W. Meile, Investigation of the flow around the Ahmed body using RANS and URANS with various turbulence models, 3rd OpenFOAM Workshop,  10-11 July 2008.

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