Difference between revisions of "Numerical schemes by Tobias Holzmann"
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Go back to [https://wiki.openfoam.com/index.php?title=Day_4 Day 4]. | Go back to [https://wiki.openfoam.com/index.php?title=Day_4 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 ([ | + | 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 ([https://holzmann-cfd.de/numerical-schemes/case-description/the-equation-and-conditions 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 behavior of the Gauss linear scheme is shown [https://www.youtube.com/watch?v=C0CcN7l37Fg in this video]. |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/standard-schemes/gauss-upwind Gauss Upwind] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/standard-schemes/gauss-linear Gauss Linear] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/standard-schemes/gauss-linearupwind Gauss LinearUpwind] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-limitedlinear Gauss LimitedLinear] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-limitedlimitedlinear Gauss LimitedLimitedLinear] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-vanleer Gauss VanLeer] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-limitedcubic Gauss LimitedVanLeer] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/standard-schemes/gauss-cubic Gauss Cubic] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-limitedcubic Gauss LimitedCubic] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-sfcd Gauss SFCD] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-quick Gauss QUICK] |
| − | * [ | + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-umist Gauss UMIST] |
| + | * [https://holzmann-cfd.de/numerical-schemes/standard-schemes/gauss-quadraticfit Gauss QuadraticFit] | ||
| + | * [https://holzmann-cfd.de/numerical-schemes/limiter-schemes/gauss-ospre Gauss OSPRE] | ||
Revision as of 07:24, 24 November 2017
- contributor: Tobias Holzmann
- affiliation: Holzmann CFD
- contact: click here for email address
- OpenFOAM version: 5.x
- 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 behavior of the Gauss linear scheme is shown in this video.
