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Guest Chris Nielsen

Which mesh type? Pave or Patch?

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Guest Chris Nielsen

Pave is a series of triangles, Patch is a more uniform patch of quadrilaterals.


When considering mesh types it is important to reflect upon TUFLOW FV and how its computational scheme performs. A model geometry is best when it describes the physical features in the most computationally efficient manner. Generally speaking a patch mesh type is the most efficient mesh type and should be applied where possible. Also, a patch is easier to control (ie it is easier to keep element size and shapes regular and according to what you intend).


A patch of elements can only be done if there are 4 arcs defining the patch. In many instances this is not possible; natural features are often more irregular. Under such circumstances a pave mesh area should be used.


Often, a mesh consists of a series of patches with paving connecting them together.

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