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Free Surface Ship Flow

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Old   March 29, 2020, 12:49
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Shuguang Wang
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Quote:
Originally Posted by Fauster View Post
Dear Foamer,

For all my hull resistance simulation the pressure coefficient shows large oscillations (as I described in a previous post). This behavior really slow down the time before reaching a quasy steady state.

I thought it came from the boundary condition used in the tutorials DTChull :
  • totaPressure for atmosphere
  • variableHeightFlowRate; for alpha @outlet
  • outletPhaseMeanVelocity; for U @Outlet
So I went back to more classical BC with fixedValue for p_rgh @outlet and zeroGradient for U and alpha (@outlet). The behavior is better and the convergence is reached quicker but I still have large pressure oscillation.


Is it possible that it comes from fvsolution settings ? (I used the same as the tutorial).


Has someone experienced the same thing ?


Thanks



Paul
Hello, Fasuter.

Do you solve this problem of large pressure oscillation?

I'm facing the same problem and would appreciate it if you could give me some hints.
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