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-   -   Different response from 1.5 and 1.6 version of sonicFoam solver (http://www.cfd-online.com/Forums/openfoam-solving/69114-different-response-1-5-1-6-version-sonicfoam-solver.html)

nishant_hull October 12, 2009 13:28

Different response from 1.5 and 1.6 version of sonicFoam solver
 
2 Attachment(s)
Hi Foamers

I am trying to simulate a travelling pulse across the pipe using sonicFoam solver. While using OpenFoam-1.6 version, I have noticed that the pulse is traversing in quite an odd way. However with same set-up and boundary conditions (in fact everything same) the older openfoam-1.5 version is giving nice velocity profile. So, in short, the soncifoam solver of old OF-1.5 version is working good but not the newer OF-1.6 version


See the attach picture for the comparision.

nishant_hull October 12, 2009 13:45

Can anybody tell me where things are going wrong?

why the new sonicfoam solver behaving so odd?

see the boundary conditions given below.

for pressure:
dimensions [1 -1 -2 0 0 0 0]; internalField uniform 100000; boundaryField { inlet { type zeroGradient; } outlet { type fixedValue; value uniform 100000; }
For Velocity:

boundaryField { inlet { type timeVaryingUniformFixedValue; value uniform (0 0 0); outOfBounds clamp; // (error|warn|clamp|repeat) fileName "inletu.dat"; } outlet { type outletInlet; outletValue uniform (0 0 0); value uniform (0 0 0); }regards,
Nishant


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