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Hi
when I wanted to use LaunderSharmaKE as a low-Re turbulence model,it complained to add these terms:

Code:

grad(U.component(0)) Gauss linearUpwind;

    grad(grad(U.component(0))) Gauss linearUpwind;

    grad(U.component(1)) Gauss linearUpwind;

    grad(grad(U.component(1))) Gauss linearUpwind;

    grad(U.component(2)) Gauss linearUpwind;

    grad(grad(U.component(2))) Gauss linearUpwind;

    grad(sqrt(k)) Gauss linear;

linear method gave very high U residuals and when I set it to linearUpwind this error occurred:

Code:

Creating turbulence model



Selecting turbulence model type RASModel

Selecting RAS turbulence model LaunderSharmaKE

LaunderSharmaKECoeffs

{

Cmu             0.09;

C1              1.44;

C2              1.92;

C3              -0.33;

sigmak          1;

sigmaEps        1.3;

Prt             1;

}



fluxScheme: Kurganov



Starting time loop



Mean and max Courant Numbers = 59.43127 2063.351031

deltaT = 2.423067604e-10

Time = 2.42307e-10



diagonal:  Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0

diagonal:  Solving for rhoUx, Initial residual = 0, Final residual = 0, No Iterations 0

diagonal:  Solving for rhoUy, Initial residual = 0, Final residual = 0, No Iterations 0

[0] swak4Foam: Allocating new repository for sampledGlobalVariables

[1] swak4Foam: Allocating new repository for sampledGlobalVariables

[2] swak4Foam: Allocating new repository for sampledGlobalVariables

[3] swak4Foam: Allocating new repository for sampledGlobalVariables

smoothSolver:  Solving for Ux, Initial residual = 1, Final residual = 5.242179386e-10, No Iterations 2

smoothSolver:  Solving for Uy, Initial residual = 1, Final residual = 4.815464786e-13, No Iterations 2

diagonal:  Solving for rhoE, Initial residual = 0, Final residual = 0, No Iterations 0

smoothSolver:  Solving for h, Initial residual = 6.065092588e-05, Final residual = 1.607770036e-09, No Iterations 1

time step continuity errors : sum local = 0, global = 0, cumulative = 0

[1] [2]

[2]

[2] --> FOAM FATAL IO ERROR:

[2] attempt to read beyond EOF

[2]

[2] file: IOstream.gradSchemes.grad(U.component(0)) at line 0.

[2]

[2]     From function ITstream::read(token&)

[2]     in file [0] db/IOstreams/Tstreams/ITstream.C at line 83.

[2]

FOAM parallel run exiting

[2]



[0]

[0] --> FOAM FATAL IO ERROR:

[0] attempt to read beyond EOF

[0]

[0] file: /home/ehsan/Desktop/Central/Turbulent_WR/low-Re/turbulent_lR700*50/processor0/../system/fvSchemes.gradSchemes.grad(U.component(0)) at line 51.

[0]

[0]     From function ITstream::read(token&)

[0]     in file db/IOstreams/Tstreams/ITstream.C at line 83.