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Coupled FSI Problem, Squeezed Film Damping

Coupled FSI Problem, Squeezed Film Damping

Coupled FSI Problem, Squeezed Film Damping

(OP)
Can anyone point me in the right direction for the following problem:

I'd like to model a clamped-clamped beam with fluid between the beam and a fixed wall. As the beam is deflected (with a transient inertial acceleration), the fluid (air) is compressed and squeezed out from beneath the gap. This creates a damping effect on the beam. I can already perform a squeezed-film analysis on the structure using FLUID136 elements to determine a damping coefficient, but would like to investigate what happens when the gap becomes extremely small. ANSYS 10 has a piezoelectric example (Example Simulation of a Piezoelectric Actuated Micro-pump), but I do not have a license for CFX. It also does not account for the large deformation in the fluid.

I’ve tried some MFS Single-Code Coupling runs, but have not gotten any good results.

Does anyone have any examples or suggestions that I could follow?


Thanks in advanced

Dan

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