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Meshing problem Gambit-fluent

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Old   January 27, 2011, 02:38
Default Meshing problem Gambit-fluent
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Hello to all,

I want to do analysis of Flow through pipe using gambit-fluent software. Air as fluid. The fluid is coming form 5 mm diameter jet. It flow (V=184 m/s ) in 1.3m long pipe of 5.5 cm diameter pipe with a bend at the end.

1. I cannot considered a axi-symmetry problem. But yes symmetrical can be considered. This gives message large negative volume.
2. If i make fine mesh near jet and pipe, large no of volume is generated.
3. Controlling mesh by giving interval counts on edge, gives me unstable solution's.
4. controlling skewness, gives me large aspect ratio mesh.

Looking for your kind help.

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Old   January 28, 2011, 01:51
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avoid negative volume.
In gambit you can check where they are: examine mesh /volume....
In memory of my friend Hervé: CFD engineer & freerider
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Old   January 28, 2011, 01:57
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You would better calculate with scale mode.
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Old   January 28, 2011, 02:42
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Can you send a snap shot of your problem, with mesh for better understanding of problem.
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