Improving convergence in smoothed particle hydrodynamics simulations without pairing instability
Improving convergence in smoothed particle hydrodynamics simulations without pairing instability
The numerical convergence of smoothed particle hydrodynamics (SPH) can be severely restricted by random force errors induced by particle disorder, especially in shear flows, which are ubiquitous in astrophysics. The increase in the number NH of neighbours when switching to more extended smoothing kernels at fixed resolution (using an appropriate …