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Control function in Elliptic solver

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Old   July 2, 2007, 04:04
Default Control function in Elliptic solver
  #1
Hoang Anh Duong
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I am implementing a grid generation code by using elliptic differential equation for 3D SURFACE. However, I have a problem with choosing control function P and Q for generate grid for 3D SURFACE. Are there anyone have experience about this? Help me!!!
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Old   July 7, 2007, 15:53
Default Re: Control function in Elliptic solver
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John Chawner
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I suggest you start with this classic reference:

http://www.hpc.msstate.edu/publicati...ook/index.html
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Old   July 8, 2007, 16:01
Default Re: Control function in Elliptic solver
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Harish
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Are you trying to implement grid clustering only or both grid clustering and orthogonality with the control function?
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Old   July 8, 2007, 20:47
Default Re: Control function in Elliptic solver
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Hoang Anh Duong
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I am trying to implement both grid clustering and orthogonality. I think control function is uesd to transfer the grid distribution on the boudary to the interior grid.

Thanks for your answer
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Old   July 9, 2007, 03:32
Default Re: Control function in Elliptic solver
  #5
andy
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My experience has been that the Ps and Qs can work to some degree but are awkward to use in practise. I had better success modifying the coefficients to control the grid distribution rather than the souce terms although my interest was in non-conformal orthogonal grids and so this experience may not map to what you are trying to do.

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