[Paraview] Calculation of a scalar (density) gradient - For a node centred solution
amitroghs at yahoo.com
Mon Dec 3 06:16:15 EST 2012
I have a node centered solution for my problem using an unstructured hybrid (tetra, prism) grid. And so I have the value of density (only one value - as it scalar) at each node location in the ASCII file of the result.
I am calculating the density gradient using the Compute Derivative option and I get the magnitude and three gradients (in x , y and z direction).
My question is how the three gradients (in x, y and z direction) are calculated in a node -centered unstructured grid ?
Is it right that first, the cell centered value (absolute density) is calculated from the node centers via interpolation and then the gradients from the cell centered value?
I could find the reference (below) for a hexahedral mesh, but not for an unstructured mesh.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the ParaView