# boudary conditions for flow past a sphere

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 January 25, 2001, 06:02 boudary conditions for flow past a sphere #1 srijit goswami Guest   Posts: n/a 1)what are the boudary conditions for the flow of a viscous fluid past a sphere ?

 January 26, 2001, 09:22 Re: boudary conditions for flow past a sphere #2 al-otaiby Guest   Posts: n/a 1. slip condition all over the surface, if it not rotate must be applied.. 2. pressure on the surface can be simply extrapolated to ensure dp/pn=0

 January 26, 2001, 09:33 Re: boudary conditions for flow past a sphere #3 Sebastien Perron Guest   Posts: n/a -I agree that for projection scheme of the simple family the BC for pressure is dp/dn=0. -But for other projection schemes that use incomplete splitting the BC must be of the form d(delta p)/dn=(1/dt)vn where vn is the "starred" velocity normal to the boundary thas has to be changed, i.e: v(t=t^n+1)=vn-dt*d(delta p)/dn -My point is that you BC depends on the scheme you use. If you could give us more info, our answer would be more adequate.

 January 27, 2001, 07:28 Re: boudary conditions for flow past a sphere #4 Senthil Guest   Posts: n/a For god's sake don't put some vague querry.Give more info about the scheme