Hello,
I am looking into how to calculate the wall shear stress in my fluid simulation. going around the forum i finished in this two links:
https://www.paraview.org/pipermail/paraview/2016-October/038305.html
but not sure about how to calculate it, the first link suggest:
- Gradient of Unstructured Data Set
- Extract Surface
- Generate Surface Normals
- Calculator filter to compute the wall shear stress from the gradient
and the surface normals.
but if I generate the gradient of U i finish with 9 components (different fields) and not a vector/tensor. therefore I am not sure how to do the last step with the calculator, if someone could enlight me with this would be appreciated.