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Variable input, compressibility and overflow error

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Old   September 30, 2015, 21:03
Default Variable input, compressibility and overflow error
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Hi Friends,

I am a student working on compressible flow though a valve.

My inlet is velocity from sin wave with maximum of speed of 3.5 m/s. The velocity is entering though a 68mm diameter tube. My valve has a 3mm gap for the flow to enter though.

My model keeps crashing and I don't understand why. The crash occur at the end half of my sin wave. The velocity is about 2.7 m/s.

Could someone please help me with some ideas?

Thank you
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Old   October 1, 2015, 06:00
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Glenn Horrocks
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Please post your output file and an image of your geometry.

Have you checked the flow conditions just before the crash? If not then do so. Put a transient result file just before it crashes and have a close look, especially at the throat.
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