A low dissipation formulation for Weakly Compressible Riemann-Based SPH schemes

What is it about?

Riemann-based weakly compressible SPH schemes with reduced numerical diffusion is presented. Diffusive term in Riemann solver scaled with local Mach number. Independent of any tuning parameter. Implemented in open-source DualSPHysics solver as a one-sided Riemann problem. New formulation increases accuracy, reduces excessive numerical dissipation in highly dynamic impact flows.

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