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What is Numerical Damping in Computational Fluid Dynamics about?

This document discusses numerical damping that occurs when solving partial differential equations using discretization methods. It explains that while spatial discretization schemes like central differencing do not intrinsically damp waves, numerical damping arises from the temporal discretization. Reducing the time step size decreases this numerical damping by making the damping rate closer to zero. The document also discusses aliasing in finite difference schemes and how wavelengths shorter than the mesh

Author

Min Wang

Language

EN