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Old   February 22, 2011, 14:15
Lightbulb Fluid structure interaction with ANSYS-CFX
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Amol
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i want to study panel flutter with two way fluid structure interaction in ansys-cfx, does anybody knows the good tutorial or procedure for the same?
plz share if you know, thank you....
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Old   February 22, 2011, 14:36
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kesife
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there is one in the CFX-tutorial about oscillating plate and FSI method using workbench, guess you've already tried this one.
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Old   February 23, 2011, 11:26
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Quote:
Originally Posted by tctczxh View Post
there is one in the CFX-tutorial about oscillating plate and FSI method using workbench, guess you've already tried this one.
I did that tutorial before going into my problem, i am doing flutter analysis with two way FSI, coupling ANSYS(transient analysis system) and CFX. structural domain is panel of 5 mm thickness and fluid has supersonic flow above it. now problem is that when i am keeping large deflection ON in mechanical part of the ANSYS (i.e. by doing this i am considering geometric non linearity in panel) panel shows nice limit cycle oscillations in it (without giving any initial disturbance to panel). but when i am doing same simulation keeping large deflection OFF (i.e. geometric nonlinearity removed), it should show large deflections in panel and amplitude should increase with time, instead of limit cycle oscillations. but don't know why i am getting very small deflections in panel (amplitude of just some nanometers). what might be going wrong?? please help................
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