Difference between revisions of "Numerics"

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'''Theory'''
 
'''Theory'''
* [https://wiki.openfoam.com/Theory_by_Joel_Guerrero Crash In these sildes ] you will find an in depth summary of the theory of CFD and also OpenFOAM.
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'''Application'''
 
'''Application'''
* In this [https://wiki.openfoam.com/Finite_Volume_Discretization_by_Hrvoje_Jasak tutorial] you will find strategies on how to improve your simulation results by optimizing the utilized discretization settings.
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* [https://wiki.openfoam.com/Finite_Volume_Discretization_by_Hrvoje_Jasak '''Simulation optimizing strategies'''] - In this tutorial you will find strategies on how to improve your simulation results by optimizing the utilized discretization settings.
* This [https://wiki.openfoam.com/Discretization_by_Jozsef_Nagy tutorial] gives insight into discretization and the influence of different schemes on the simulation results. The pdf version can be found [https://wiki.openfoam.com/Discretization_by_Bahram_Haddadi here].
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* [https://wiki.openfoam.com/Discretization_by_Jozsef_Nagy '''Details about discretization schemes'''] - This tutorial gives insight into discretization and the influence of different schemes on the simulation results.  
* [https://wiki.openfoam.com/Numerical_schemes_by_Tobias_Holzmann Here] you will see the influence of the mesh type, hexaeder and tetraeder, 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.
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* [https://wiki.openfoam.com/Grid_Convergence_by_Bahram_Haddadi '''Patching fields'''] - Use the sonicFoam solver, simulate 0.007 s of flow inside a shock tube, with a mesh with 100, 1000 and 10000 cells in one dimension, for initial values 1 bar/0.1 bar and 10 bar/0.1 bar..
* [https://wiki.openfoam.com/index.php?title=Grid_convergence_by_Jozsef_Nagy Here] you will learn the importance of grid resolution and its effect onto your results. The pdf version can be found [https://wiki.openfoam.com/Grid_Convergence_by_Bahram_Haddadi here].
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* [https://wiki.openfoam.com/index.php?title=Transport_equation_by_Jozsef_Nagy '''Transport equations in OpenFOAM'''] - Here you will get a basic idea on the structure of the transport equations, which are solved in CFD and also in OpenFOAM.  
* [https://wiki.openfoam.com/index.php?title=Transport_equation_by_Jozsef_Nagy Here] you will get a basic idea on the structure of the transport equations, which are solved in CFD and also in OpenFOAM. The pdf version can be found [https://wiki.openfoam.com/Transport_Equation_by_Bahram_Haddadi here].
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* [https://wiki.openfoam.com/NACA0012_by_Michael_Alletto '''Transonic flow around a periodically pitching NACA0012 airfoil'''] - In this tutorial you will learn about the compressible transonic flow around a periodically pitching NACA0012 airfoil including the study of divergence schemes
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*[https://wiki.openfoam.com/Discretization_by_Bahram_Haddadi '''Discretization – Part 1'''] - Use the scalarTransportFoam solver, simulate 5 s of flow inside a shock tube using different discritization schemes..
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Check the [https://wiki.openfoam.com/Numerics_archive '''Archive'''] section for more (however not fully up to date) tutorials on numerics.
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=Further reading=
 
=Further reading=

Latest revision as of 12:07, 30 May 2023

In order to correctly run a simulation, it is of utmost importance to understand the numerics being solved in the simulations. These tutorials will give you detailed insight into the theory behind CFD and especially OpenFOAM.

Go back to Collection by topic.

Numerics

Theory


Application

  • Simulation optimizing strategies - In this tutorial you will find strategies on how to improve your simulation results by optimizing the utilized discretization settings.
  • Details about discretization schemes - This tutorial gives insight into discretization and the influence of different schemes on the simulation results.
  • Patching fields - Use the sonicFoam solver, simulate 0.007 s of flow inside a shock tube, with a mesh with 100, 1000 and 10000 cells in one dimension, for initial values 1 bar/0.1 bar and 10 bar/0.1 bar..
  • Transport equations in OpenFOAM - Here you will get a basic idea on the structure of the transport equations, which are solved in CFD and also in OpenFOAM.
  • Transonic flow around a periodically pitching NACA0012 airfoil - In this tutorial you will learn about the compressible transonic flow around a periodically pitching NACA0012 airfoil including the study of divergence schemes
  • Discretization – Part 1 - Use the scalarTransportFoam solver, simulate 5 s of flow inside a shock tube using different discritization schemes..


Check the Archive section for more (however not fully up to date) tutorials on numerics.


Further reading