# Immersed boundary method with momentum forcing

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 January 24, 2006, 10:33 Immersed boundary method with momentum forcing #1 Fuka Guest   Posts: n/a Hello, does anybody have experiences with Immersed boundary method? I'm trying version with momentum forcing(Kim,Kim,Choi 2001 like in Fadlun et al. or Mohd Yusof et al.) I have problems with computation of pressure with pressure correction (fractional step method with lagged pressure gradient) maybe because of bad initial or boundary conditions. I have simple flow around a cube. How can I treat a body in initial conditions? How can I compute initial pressure? Now I tried simple IC U=Uin and p=0 and then impose IB forcing in first step but I'm getting great pressure gradient in x direction. In Poisson equation I use dPhi/dn=0. Can anybody help?

 February 6, 2006, 04:46 Re: Immersed boundary method with momentum forcing #2 philippe Guest   Posts: n/a hello Fuka, I 'm working with Modh Yusof's approach since several years. I don't think it's a initial or boundary conditions problems, but i want to know, how do you satisfy the no-slip condition on the immersed boundary method ? Special traitment of velocity fields in the body ... ? If you want, I can give you somes articles about it. Best regards, p.s : Sorry for my english

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