CFD Online Discussion Forums

CFD Online Discussion Forums (
-   STAR-CCM+ (
-   -   non-relfective BC for Hydro-acoustics (

hgmania February 13, 2014 19:32

non-relfective BC for Hydro-acoustics
Hi all,

I'd like to compute hydro-acoustics induced by hydrofoil or cylinder.

STAR-CCM+ has non-reflective boundary condition as "Free Stream" in ideal gas.

However, as you know, STAR-CCM+ doesn't have any non-reflective boundary condition in compressible flow of water.

When I compute hydro-acoustic(compressible flow), I only could use "Velocity-Inlet" and "Pressure-Outlet" which could reflect the acoustic pressure wave.

I use IAPWS equation of state.

Please let me know how to treat for Nonreflecting BC

Best Regards
Hogeon Kim

me3840 February 14, 2014 17:01

Unfortunately there are no non-reflective BCs for liquids in STAR-CCM+. You will have to use a source near the boundaries of the domain to damp out the acoustic sources, or just ensure that your boundaries are very far from your object under study.

All times are GMT -4. The time now is 18:46.