Inviscid smoothed particle hydrodynamics

  title={Inviscid smoothed particle hydrodynamics},
  author={Lee Cullen and Walter Dehnen},
In smoothed particle hydrodynamics (SPH), artificial viscosity is necessary for the correct treatment of shocks, but often generates unwanted dissipation away from shocks. We present a novel method of controlling the amount of artificial viscosity, which uses the total time derivative of the velocity divergence as shock indicator and aims at completely eliminating viscosity away from shocks. We subject the new scheme to numerous tests and find that the method works at least as well as any… CONTINUE READING


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