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[ascl:1305.006] Pressure-Entropy SPH: Pressure-entropy smooth-particle hydrodynamics

Pressure-Entropy SPH, a modified version of GADGET-2, uses the Lagrangian “Pressure-Entropy” formulation of the SPH equations. This removes the spurious “surface tension” force substantially improving the treatment of fluid mixing and contact discontinuities. Pressure-Entropy SPH shows good performance in mixing experiments (e.g. Kelvin-Helmholtz & blob tests), with conservation maintained even in strong shock/blastwave tests, where formulations without manifest conservation produce large errors. This improves the treatment of sub-sonic turbulence and lessens the need for large kernel particle numbers.

Code site:
http://www.tapir.caltech.edu/~phopkins/Site/gadget2p.tgz
Used in:
http://adsabs.harvard.edu/abs/2013MNRAS.428.2840H
Bibcode:
2013ascl.soft05006H

Views: 1572

ascl:1305.006
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