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Bc for velocity splitting
Dear all,
I would like to compute an incompressible turb. jet by LES and after that splitting the velocity field u = {u_1, u_2, u_3} into a potential and rotating part: u = rot psi + grad phi after applying the div - operator on this equ., I end up with div u = 0 = laplace phi Can anybody say how to find some usefull bc for this problem. Outside the jet flow I have u = 0 and also phi = 0, but at the jet outflow and inflow, I can not say phi = 0, otherwise I had the trivial solution ( with homogenous dirichlet at the bc) phi =0 everywhere which is obviously wrong. Has anybody experience in this matter or can refer some literature. thanks in advance Matthias |

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