Low shear diffusion central schemes for particle methods

We present the first application of a central scheme in an unstructured meshless code and extend it to limit diffusion in shearing flows. Some numerical diffusion is required in simulations of compressible fluids to maintain stability and prevent formation of spurious structures. The Kurganov-Tadmor (KT) central scheme uses a signal velocity and a linear reconstruction of fields to limit numerical diffusion away from discontinuities. We …