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Constraint B.Cs with derivatives with respect to time and space in Fluid-Structure interaction
Posted Sep 13, 2011, 11:21 a.m. EDT Acoustics & Vibrations, Parameters, Variables, & Functions 0 Replies
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I am going to model the Acoustic-Solid interaction in PDE module. For the fluid to solid boundary, I am going to apply the Euler relation:
utt+(1/rho)*px=0
for x-direction and similar equations for other directions. The only way, I found to implement it was using the Constraint B.C: R=0 but I do not know if it supports this B.C by the way it has defined in Comsol.
Previously, in another post "Derivative Boundary Condition " a moderator had told it is possible but it needs to consider some changes like changing the setting to "Unidirectional" and "Week Form".
I am just wondering if first of all I can apply this conditon as the Constraint B.C and if I can what settings are appropriate for my conditions and why.
Best Regards,
Masoud
Hello Masoud Ghorbani Moghaddam
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