Numerical Instability of the 2. Order Gauss Linear Scheme OpenFOAM

This video demonstrates the numerical instability of the 2. order Gauss linear scheme for unstructured meshes. The description of the solved equation and the comparison to other meshes such as structured and polygon with subsequent mesh refinement can be found at the website given below. Both, the quantitively and qualitatively results are presented while the OpenFOAM® case is provided and can be downloaded for own investigations. Advanced OpenFOAM® material can be found at