duct modeling with exit closed (v=0)
I want to simulate acoustic instability in a duct with inlet and exit(closed). Here i have a problem to model FFT with The boundary condition at the exit of the section as V = 0 (velocity = 0), since the exit is closed. so that i can plot thr frequency responce of the acoustic wave reflecting back hitting the wall. can any one give a sugession of which kind of model should i use for this problem.
can i model a duct with exit closed in fluent. I am using ideal gas with velocity input at the inlet. is DPM enabling (dispersion phase modeling) can help to slove my problem.
i just want to knoe hoe to model a duct with exit closed and wt are boundary conditions should i use for this exit ??????
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