When Gradients Go Wrong on Skewed Meshes — Green–Gauss vs. Weighted Least-Squares Reconstruction
·5 min read
Two ways to build cell gradients on unstructured meshes, and which one survives distortion
Saving Gradients on Unstructured Grids — Moving Least-Squares Approximation
·5 min read
A local polynomial fit that recovers both values and derivatives from scattered points