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Possible missing turbulent stress terms in sonicTurbFoam

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Old   November 25, 2008, 13:46
Default Description Certain terms suc
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srinath
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Description
Certain terms such as laminar viscosity and work done by turbulent/laminar viscous stresses seem to be ignored.

Solver
sonicTurbFoam

sourceFiles
sonicTurbFoam.C, hEqn.H

Version
1.5

Notes
line 63
fvVectorMatrix UEqn
(
fvm::ddt(rho, U)
+ fvm::div(phi, U)
+ turbulence->divDevRhoReff(U)
);
--Laminar viscous stress not taken into account. Possibly igonored because it is negligible compared to Turbulent viscosity. But what about effect of bulk viscosity at high Mach no's for compressible flows?

file hEqn.H
solve
(
fvm::ddt(rho, h)
+ fvm::div(phi, h)
- fvm::laplacian(turbulence->alphaEff(), h)
==
DpDt
);
--Work done by turbulent viscous surface stress does not appear to be taken into account.

Srinath
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Old   November 25, 2008, 16:10
Default Yes currently ignored as they
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Yes currently ignored as they are small in general but they are easy to include if required by your particular application.

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Old   November 26, 2008, 02:59
Default Thanks Henry
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Thanks Henry
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