Turbulence model
Hi Dears
I want to simulate the undular hydraulic jump (hydraulic jump with stationary wave).In first step, I did the model with laminar flow. In next step I want to study the turbulence model in this area. When I active ke or RNG model, the simulation is terminated after a minute. What should I do for the simulation? Regards 
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May be you are using an implicit model for viscosity. I mean, RNG and keps are turbulence models based on a dissipation and a transport equation. In this kind of models (which involve a transport equation), viscous diffusion terms are always aproximated explicitly. Hope it helps 
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Thank you for reply. I used explicit model for viscousity when I do with Ke or RNG but I got same result . I received this message from Flow3D: ============= mentor tip =============== persistent fpacking location at t= 0.52021E+01 x= 0.99991E+01, y= 0.00000E+00, z=0.33636E01 i=5495, j= 2, k= 5 f= 0.96045E+00 recommend reducing cfpk by factor of 10 ======================================== I change cfpk to 10 or 20 but the procedure did not change. Regards Ati 
try with some Vof Lagrangian model and/or no FPacking at the beginning of the simulation at least

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