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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: gregor

Forum: OpenFOAM Running, Solving & CFD June 26, 2013, 05:32

Replies: 26 LES Compressible Smagorinsky Model Views: 10,653 Posted By gregor well if you have a close look you'll see that the... well if you have a close look you'll see that the second function virtual tmp<volScalarField> k() const only calls the first function tmp<volScalarField> k(const tmp<volTensorField>& gradU)...

Forum: OpenFOAM Running, Solving & CFD January 31, 2013, 04:32

Replies: 26 LES Compressible Smagorinsky Model Views: 10,653 Posted By gregor this is thr algebraic equation for TKE k: -... this is thr algebraic equation for TKE k: - c_B*rho*K^2*Delta^(-1) = 2/3 rho*K*trace(D)-2*c_k*Delta*D^2 in the incompressible case: 2/3 rho*K*trace(D) = 0 (continuity) thus k=c_B/c_K...

Forum: OpenFOAM Running, Solving & CFD January 24, 2013, 07:51

Replies: 26 LES Compressible Smagorinsky Model Views: 10,653 Posted By gregor Hi H take Eq. 5 and divide it by k^(1/2) and... Hi H take Eq. 5 and divide it by k^(1/2) and you get: - c_B*rho*k*Delta^(-1) = 2/3 rho*k^(1/2)*trace(D)-2*c_k*Delta*D^2 now substitute k by k=K^2, this yields - c_B*rho*K^2*Delta^(-1) =...

Forum: OpenFOAM Running, Solving & CFD July 11, 2012, 07:57

Replies: 26 LES Compressible Smagorinsky Model Views: 10,653 Posted By gregor As demanded: To derive the quadratic k... As demanded: To derive the quadratic k equation you take -B*D = c_B*rho*k^(3/2)*delta^(-1) (1 equilibrium assumption) and plug in B = 2/3 rho*k*I-2*mu_t*D (2 subgrid scale stress...

Forum: OpenFOAM Running, Solving & CFD January 25, 2012, 12:35

Replies: 26 LES Compressible Smagorinsky Model Views: 10,653 Posted By gregor And furthermore you can actually derive the... And furthermore you can actually derive the quadratic k equation from the Fureby1996 paper. I just did't see how in the beginning.

Forum: OpenFOAM Running, Solving & CFD January 25, 2012, 12:07

Replies: 26 LES Compressible Smagorinsky Model Views: 10,653 Posted By gregor that was a bug see... that was a bug see http://www.openfoam.com/mantisbt/view.php?id=389

Showing results 1 to 6 of 6

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