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

Forum: OpenFOAM December 10, 2011, 03:33

Replies: 9 zeroGradient BC for velocity at oulet Views: 5,677 Posted By achinta Hello, I observe differences between analytical... Hello, I observe differences between analytical and OF results (please find the attached files).I had assumed zeros pressure gradient(dp/dx=0) while deriving analytical solution. In openFoam, its...

Forum: OpenFOAM December 8, 2011, 18:18

Replies: 9 zeroGradient BC for velocity at oulet Views: 5,677 Posted By achinta Density and c are related through the formula: ... Density and c are related through the formula: Density=0.6-(0.4*tanh(10*(0.5-c))); c-scalar So, rho is not zero even when c=0. There is no zero density region. c=0 means fuel is completely...

Forum: OpenFOAM December 8, 2011, 16:37

Replies: 9 zeroGradient BC for velocity at oulet Views: 5,677 Posted By achinta Hi, The product of density and velocity is a... Hi, The product of density and velocity is a constant. Density depends on scalar(c). Hence, velocity boundary condition at inlet depends on scalar. But, the time varying boundary conditions for...

Forum: OpenFOAM December 8, 2011, 15:08

Replies: 9 zeroGradient BC for velocity at oulet Views: 5,677 Posted By achinta Hi, I am developing a PISO-based algorithm to... Hi, I am developing a PISO-based algorithm to solve low-mach number reacting flow. Its solves continuity, momentum and scalar transport equation. The density is related to scalar(c=1, if fuel is...

Forum: OpenFOAM December 8, 2011, 11:37

Replies: 9 zeroGradient BC for velocity at oulet Views: 5,677 Posted By achinta Hello everyone, I would like to add some more... Hello everyone, I would like to add some more information. I am using PISO algorithm. The following boundary conditions were given to the unsteady, compressible 1 D pipe/channel flow: ---------...

Forum: OpenFOAM December 7, 2011, 13:24

Replies: 9 zeroGradient BC for velocity at oulet Views: 5,677 Posted By achinta zeroGradient BC for velocity at oulet Hi all, I am implementing my own solver in OF. I have 1D flow case. The velocity boundary condition at the outlet is zeroGradient. But, the results obtained are contradicting the BCs. Seems, OF is...

Showing results 1 to 6 of 6

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