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What is the difference between Non-staggered and Collocated grid?

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Old   January 23, 2017, 13:59
Default What is the difference between Non-staggered and Collocated grid?
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carl jung
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Hi all,

What is the difference between Non-staggered and Collocated grid?

According to Solution of Navier-Stokes equations on non-staggered grid(Date, 1992), ‘non-staggered’ grid arrangement, in which the velocities and the pressure are stored at the same location, that is, at the grid node.

According to CFD-Online Wiki, In collocated grid storage all flow variables are stored at the same locations.

I guess all the variables are stored at the grid node in non-staggered grid, and all the variables are stored at the same location(no matter where that is) in the collocated grid. Am I right?

If the variables are stored at the grid nodes, I wonder if I need to say just 'non-staggered grid', or 'collocated and non-staggered grid'.

Any comments would be appreciated.

Carl
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Old   January 23, 2017, 14:11
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Filippo Maria Denaro
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According to the book of Peric & Ferziger, colocated grid and non-staggered grid are the same.
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Old   January 23, 2017, 14:39
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Thank you!
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