CFD The Courant (CFL) Number

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23 Jul 2022

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An introduction to the Courant number in modern Computational Fluid Dynamics (CFD) codes. The following topics are covered: 1) 2:07 How is the Courant Number calculated in 1D? 2) 5:41 How is the Courant Number calculated for general 3D cells? 3) 17:21 What are the recommended values of Courant Number in CFD? 4) 19:51 How does adjustable time stepping work? #CourantNumber #fluidmechanics101 #cfd ============================================== Some useful references: 1) The Original Paper by Courant, Friedrichs and Lewy (1928). The paper is in German so may be difficult to read! 2) CFD Online Discussion of Courant Number in OpenFOAM 3) CFD Online Discussion of Adjustable Time Stepping

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