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Old   October 11, 1999, 13:27
Default staggered grid
  #1
Matteo Manganelli
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Which is the advantage in using a staggered grid? Is it alwayas the best method?

Thank you.

Matteo
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Old   October 11, 1999, 15:04
Default Re: staggered grid
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Md. Ziaul Islam
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A staggered grid is used for pressure and velocity cells to obtain convergent solutions where the fluctuations in the velocity and pressure, as well as the free surface instabilities need to be evaluated.
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Old   October 12, 1999, 09:24
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Yangang Bao
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I think staggered grid is only valid for regular mesh(so-called structured grid).

I am using tetrahedral grid in 3D, and using colocated grid, it works fine.
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Old   October 13, 1999, 01:06
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Frank
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A staggered grid is used to prevent pressure velocity decoupling which can occur on a collocated grid if certain measures are not taken.
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Old   October 13, 1999, 08:49
Default Re: staggered grid
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Yangang Bao
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pressure mode only occurs when you use the same low order of shape functions for pressure and velocity (velocity should be interpolated 1-degree higher than pressure due to NS equations) or when you use regular mesh.
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