Numerical schemes by Tobias Holzmann
- contributor: Tobias Holzmann
- affiliation: Holzmann CFD
- contact: click here for email address
- OpenFOAM version: 2.1.x-4.x (explicitly stated for each tutorial)
- published under: GPL v3 license
Go back to Day 4.
Numerical scheme analyzing
The numerical discretization is treated by choosing different numerical schemes in OpenFOAM. Each numerical scheme behaves different which is demonstrated in a simple convection flow (link). Here, you will see the influence of the mesh type, hexahedra and tetrahedra, the orientation of the mesh and the mesh density on the accuracy of the solution and if the scheme produces physical or also non-physical values. The importance of the scheme that you use and a critical behaviour of the Gauss linear scheme is shown in this video.