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non-reflecting boundary condition

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Old   February 25, 2009, 09:10
Default non-reflecting boundary condition
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Saeid
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I wanna define nonreflecting boundary condition for numerical simulation on wall. I know we can absorb wave with porous wall but i wanna define a boundary condition which absorb shock wave without mass diffusion. Do you have any experience about it? could you please help me about it. I try some numerical method such as characteristic method, .. but when i defined it,it reflect shock waves.
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Old   February 25, 2009, 09:34
Default Re: non-reflecting boundary condition
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Timon
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Have a look at the articles by K.W. Thompson: Time dependent boundary conditions for hyperbolic systems I & II ...

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Old   February 25, 2009, 14:53
Default Re: non-reflecting boundary condition
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jinwon park
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Look a sponge-layer approach. It was pretty straightforward compared to characteristic methods. Good luck!
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