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NEGETIVE VOLUME

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Old   December 7, 2006, 02:06
Default NEGETIVE VOLUME
  #1
ammi reddy
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hi i am doing dyanamic meshing for piston and cylinder arangement of pulse tube REFRIGERATOR .A udf is given to piston for velocity i have done meshing in gambit

now i am facing following problem

Error: Update-Dynamic-Mesh failed. Negative cell volume detected. Error Object: ()

how to solve it

AMMI REDDY
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Old   December 8, 2006, 01:37
Default Re: NEGETIVE VOLUME
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Ryan
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Hi Ammi,

How are you moving it.

Is it based on the pressure from the fluid or time.

Regards

Rajit
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Old   December 8, 2006, 04:26
Default Re: NEGETIVE VOLUME
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ammi reddy
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hi

i am doing on time basis velocity of piston is given by

V= A cos(wt)

A and w are const , values r given in UDF the piston has to move forward and backward

PLZ HELP

AMMI REDDY
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