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Showing results 1 to 7 of 7 Search took 0.00 seconds. Search: Posts Made By: Andy_bm

Forum: OpenFOAM Running, Solving & CFD May 18, 2015, 11:53

Replies: 38 Convection discretization schemes for LES Views: 15,338 Posted By Andy_bm What about internalField for k? Did you set this... What about internalField for k? Did you set this = k_inlet value or 0?

Forum: OpenFOAM Running, Solving & CFD April 11, 2015, 00:12

Replies: 38 Convection discretization schemes for LES Views: 15,338 Posted By Andy_bm And what scheme for grad and div(phi,U) did you... And what scheme for grad and div(phi,U) did you use?

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 16:23

Replies: 38 Convection discretization schemes for LES Views: 15,338 Posted By Andy_bm I use libforces.lib and then plot result in... I use libforces.lib and then plot result in labplot.For k~0.96 pulsation of coeffs occur near 0.8, for small k near 0.3.End time is sufficiently large.

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 15:58

Replies: 38 Convection discretization schemes for LES Views: 15,338 Posted By Andy_bm Thanks for your answers! My case is flow... Thanks for your answers! My case is flow past cylinder.I have mesh with y+ 0.1-1. And I have following problem if I use k_inlet~0.96 (1.5(UI)^2) -> Cd ~0.8. if k_inlet~0.01-0.0001 -> Cd~0.3 but...

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 15:19

Replies: 38 Convection discretization schemes for LES Views: 15,338 Posted By Andy_bm Now I have BC on wall for nusgs - zeroGradient,... Now I have BC on wall for nusgs - zeroGradient, so I must set fixedValue = 0 if y+ ~ 1? Sorry,I don't understand initial condition for k on WALL must be near 0 or initial condition on INLET must ~ 0?

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 13:38

Replies: 38 Convection discretization schemes for LES Views: 15,338 Posted By Andy_bm Thanks, What about nusgs near wall? Maybe... Thanks, What about nusgs near wall? Maybe there is a ratio between nusgs and nu? In oneeqeddy nusgs = c*delta*sqrt(k). If k -> 0, delta -> 0 as y+ ~ 1 => nusgs -> 0.But nusgs may varried...

Forum: OpenFOAM Running, Solving & CFD April 6, 2015, 09:04

Replies: 38 Convection discretization schemes for LES Views: 15,338 Posted By Andy_bm Can you explain why initial conditions for k... Can you explain why initial conditions for k should have small value? And how to calculate initial conditions for k?

Showing results 1 to 7 of 7

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