Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 408, Issue 2, Pages 669-683Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2010.17158.x
Keywords
hydrodynamics; methods: numerical
Categories
Funding
- STFC
- Science and Technology Facilities Council [ST/H002235/1] Funding Source: researchfish
- STFC [ST/H002235/1] Funding Source: UKRI
Ask authors/readers for more resources
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 previous technique in the strong-shock regime, but becomes virtually inviscid away from shocks, while still maintaining particle order. In particular sound waves or oscillations of gas spheres are hardly damped over many periods.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available