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"O" Grid?????

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Old   May 10, 2016, 04:17
Default "O" Grid?????
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Brett
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Hi guys,

Came across some literature recently that referenced an "O" grid.

It was used to capture the flow near impeller vanes.

Any thoughts on what exactly that is?

Brett
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Old   May 11, 2016, 14:26
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An O-grid is a structured grid that wraps around the body, such that the last plane normal to the wrap around direction is coincident with the first plane normal to the wrap around direction. See also

http://www.innovative-cfd.com/cfd-grid.html
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Old   May 12, 2016, 05:54
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Thanks heaps, The picture in the link explained it well.

Ive heard that a C-H grid is best for use on airfoils.

Any thoughts on why this is?
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Old   May 12, 2016, 13:07
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A C grid or H grid will allow for the wake to be better resolved.

http://turbmodels.larc.nasa.gov/naca0012_grids.html
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compressor diffuser cfx, grid generation, impeller simulation, meshing advice, o mesh

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