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Zero outflow boundary condition

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Old   February 12, 2006, 10:25
Default Zero outflow boundary condition
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sk
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Hello...

Could anyone please tell me if and when a zero outflow (outlet velocity=0) boundary condition is possible. I am tryin to simulate the expansion of a elastic tube by increasing the inflow and constricting the outflow (making it zero)...seems that it does not give me a consistent solution...is zero outflow possible at all or what am I missing...it seems so obvious and simple but I just can't figure it out?? please help...Thanks a lot...

sk
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Old   February 12, 2006, 12:38
Default Re: Zero outflow boundary condition
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Andrew Mettler Hayes
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I am not sure if Fluent can do something like deformation. I think you need to look into Ansys. I know that can do non-linear deformation, which seems to be your case. You need to look for examples of people modeling the blowing up of a balloon. Nastran makes ansys - NENastran.com. There is also ansys.net for users
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Old   February 13, 2006, 00:21
Default Re: Zero outflow boundary condition
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Ahmed
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You cannot do it the way you are suggesting. You can define your outlet as a wall and solve a tank pressurizing problem (see tutorials) but the question is if that is what you want from your analysis????

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