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The Relationship between the Courant Number and Residual

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Old   April 1, 2009, 07:02
Default The Relationship between the Courant Number and Residual
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fanwei
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All CFD Expert, i have a question about the Relationsship between the convective Courant Number and the Convergence of the Residuals.

I do now a simulation of VOF(Light- und Heavefluid). If i reduce the timestep,the Residual decrease.

Can sombody explain the Relationsship between them?

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Old   April 1, 2009, 10:16
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Look at how the residual is calculated in the code and how it depends on time step or CFL.
I cannot say anything more without knowing the definition of the residual in your code.
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