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February 13, 2014, 19:32
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non-relfective BC for Hydro-acoustics
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#1 |
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New Member
Hogeon Kim
Join Date: Feb 2014
Posts: 1
Rep Power: 0  |
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 |
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February 14, 2014, 17:01
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#2 |
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Senior Member
Join Date: Nov 2010
Location: USA
Posts: 1,232
Rep Power: 26 |
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.
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January 9, 2020, 06:27
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#3 |
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New Member
Federica Fregosi
Join Date: Mar 2019
Posts: 3
Rep Power: 8 |
Dear Hogeon Kim,
I am dealing with the same topic: hydroacoustic analysis. I did the tutorials for aeroacoustic in StarCCM+ and everything worked. But when I introduce "WATER" it becomes less clear. Have you solved your issue? Which BC should be used? Thank you. Federica |
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