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Exact solution of N-S eq. in Kim and Moin's paper |
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January 21, 2012, 07:45 |
Exact solution of N-S eq. in Kim and Moin's paper
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#1 |
New Member
Kyounghwa Kim
Join Date: Jan 2012
Posts: 9
Rep Power: 14 |
Hello. I'm Kyounghwa.
I'm going on check my New solver for N-S eq. I have a question. There are exact solution of N-S eq. about decaying vortices. u(x,y,t)=-cosx*siny*exp(-2t) v(x,y,t)=sinx*cosy*exp(-2t) p(x,y,t)=-1/4*(cos2x+cos2y)*exp(-4t) These equations are in Kim and Moin's paper. "Application of a Fractional-Step Method to Incompressible navier-Stokes Equations" in 1985. This eq. satisfies divergence free. But, I can't solve by just substituting into Incompressible N-S eq. because the boundary condition of exact solution changes for time(t). What will I do? Please, give me an idea. I don't know anything. I have one more question. How to obtain a exact solution with boundary conditions of u and v are zero? Last edited by Kyounghwa; January 21, 2012 at 08:04. Reason: It's mistake. |
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January 21, 2012, 08:08 |
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#2 | |
Senior Member
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Quote:
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January 21, 2012, 08:57 |
I don't understand.
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#3 |
New Member
Kyounghwa Kim
Join Date: Jan 2012
Posts: 9
Rep Power: 14 |
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January 21, 2012, 10:05 |
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#4 |
New Member
Kyounghwa Kim
Join Date: Jan 2012
Posts: 9
Rep Power: 14 |
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January 21, 2012, 11:54 |
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#5 |
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cfdnewbie
Join Date: Mar 2010
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January 23, 2012, 10:36 |
OK~
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#6 | |
New Member
Kyounghwa Kim
Join Date: Jan 2012
Posts: 9
Rep Power: 14 |
Quote:
Ok. I'm understanding. I will try to do. And I will report. Thanks. Last edited by Kyounghwa; January 23, 2012 at 10:37. Reason: Add something. |
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Tags |
exact solution, kim and moin, navier stokes equation |
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