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FSI problem: wall tension plot

Posted 21 mars 2012, 08:41 UTC−4 MEMS & Nanotechnology, Fluid & Heat, MEMS & Piezoelectric Devices, Computational Fluid Dynamics (CFD), Results & Visualization Version 4.2a 1 Reply

Abbie
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Hi,

I have a FSI model (balloon filled with water) which solved successfully, however I don't know if I can plot wall tension of the balloon. Anyone know how to plot wall tension (or wall stress) in COMSOL?

Looking forward for your help. Thanks!
1 Reply Last Post 21 mars 2012, 23:33 UTC−4
Chiwei Ong
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Posted: 1 decade ago 21 mars 2012, 23:33 UTC−4
O.K, so you have a balloon which filled with fluid, i just like to offer some suggestion.
May i know whether what type of material you are use for your balloon? is it linear elastic or hyperelastic properties?

normally i will plot the stress by selecting the fluid structure interface boundary, the one who interface the wall and fluid.by selecting the solid pressure function. i think that should be the wall stress, in terms of unit. There is one term call stress tensor, you can try it and compare.

However, i am not sure whether it is the correct way to plot.
Anyone who is experience in FSI, may share the thought i also interested to know about it.


O.K, so you have a balloon which filled with fluid, i just like to offer some suggestion. May i know whether what type of material you are use for your balloon? is it linear elastic or hyperelastic properties? normally i will plot the stress by selecting the fluid structure interface boundary, the one who interface the wall and fluid.by selecting the solid pressure function. i think that should be the wall stress, in terms of unit. There is one term call stress tensor, you can try it and compare. However, i am not sure whether it is the correct way to plot. Anyone who is experience in FSI, may share the thought i also interested to know about it.

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