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Old   June 12, 2002, 01:39
Default Anyone can help me?
  #1
Zhu
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I want to simulate 3D flow in an open channel by SIMPLER method. But I get a problem---that is how to calculate water level H.

I use 4 governing equations. One is continuity eq. and three are the momentum equations for u, v, w (namely, dynamic water pressure rather than static water pressure is considered here).

Based on these equations, I can calculate the velocities of u,v,w and water pressure P by simple(or simpler) method. But, how to calculate water level H is a big problem for me.

Anyone can help me? your helps will be greatly appreciated. Thank you very much.

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Old   June 12, 2002, 04:06
Default Re: Anyone can help me?
  #2
Junseok Kim
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One way to do this, you may use two phase simulation with one is water and the other is air, so the water level H is just surface between water and air.

Kim

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Old   June 12, 2002, 04:20
Default Thank you very much
  #3
Zhu
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But consider the way of two phase, it seems too difficult for me. Can you provide me another approach only dealing with one phase? Thank you very much
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Old   June 12, 2002, 06:31
Default Re: Thank you very much
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Matthias
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Check the book of Griebel (Numerical Simulation in Fluid Dynamics) There and MAC-algorithm is presented for a free-surface problem.

Hope this helps Matthias
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Old   June 12, 2002, 06:33
Default Thank you very much
  #5
Zhu
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Old   June 12, 2002, 06:36
Default Can you tell me when is it published?
  #6
Zhu
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and what the publisher is? Thank you very much
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Old   June 12, 2002, 07:34
Default Re: Can you tell me when is it published?
  #7
Junseok Kim
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You can visit their website and it has free 3D source code, it is written in C++.

And I recomend that book, too. It is a good book and easy to read.

http://wwwwissrech.iam.uni-bonn.de/r...3DGP/index.htm

Kim
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Old   June 12, 2002, 07:40
Default Thank you very much. I will read it
  #8
Zhu
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