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Matteo Manganelli October 11, 1999 13:27

staggered grid
 
Which is the advantage in using a staggered grid? Is it alwayas the best method?

Thank you.

Matteo

Md. Ziaul Islam October 11, 1999 15:04

Re: staggered grid
 
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.

Yangang Bao October 12, 1999 09:24

Re: staggered grid
 
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.

Frank October 13, 1999 01:06

Re: staggered grid
 
A staggered grid is used to prevent pressure velocity decoupling which can occur on a collocated grid if certain measures are not taken.

Yangang Bao October 13, 1999 08:49

Re: staggered grid
 
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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