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Old   June 28, 2013, 08:00
Default 6 DOF UDF touch wall
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I'm simulating a particle in a tube with a flow using 6 DOF UDF. The problem I've got is that Fluent gives me an error (negative cell found) when this rigid particle touches the wall of the tube. I don't know if there is any solution. Thanks

And if I define two different rigid particles, if I will get the same error when they touch each other.
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Old   June 28, 2013, 15:55
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Hi mate,
As far as I know Fluent can not model strike of two walls with 6DoF.
You see, this process is rather mechanical.
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Old   June 28, 2013, 17:23
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Thanks for your answer.

Just say that I don't want to smash a particle against a wall, I've got a curve pipe and I want to see how particles with different shapes behave. Is not possible with fluent? When the particle touches the wall I get always the error.

Thanks again mate
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Old   June 29, 2013, 05:32
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I have already tried what you want but it seems impossible with fluent.
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Old   March 27, 2015, 22:38
Default Same situation, different question
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Hi
I want to simulate a similar case that a particle float in a vertical tube. The solver can give right pressure contour map if the dynamic mesh is off while pressure will be a mess if it is on. That is to say, with wrong pressure, buoyancy cannot be true.
I hope to hear from you, Thank you!
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Old   March 29, 2015, 14:58
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Attach some pictures or else.with this information i can't help.
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Old   March 30, 2015, 23:08
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Quote:
Originally Posted by sadjad.s View Post
Attach some pictures or else.with this information i can't help.
Hi,3q u for rippling!
Can I have your email for it is not easy for me to upload pics!
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