An approach to the Riemann problem for SPH inviscid ideal flows: consequences for the state equation

Details An approach to the Riemann problem for SPH inviscid ideal flows: consequences for the state equation An approach to the Riemann problem for SPH inviscid ideal flows: consequences for the state equation

2010-02-22

arxiv.org/abs/1002.4078v2

Physics

Fluid Dynamics

7 pages, 2 figures, ASP Con. Astronum 2009

Scientific paper

In the non viscous fluid dynamics, Smooth Particle Hydrodynamics (SPH), as a free Lagrangian "shock capturing" method adopts either an artificial viscosity contribution or an appropriate Riemann solver technique. An explicit or an implicit dissipation, introduced in such techniques, is necessary to solve the Euler equations to solve flow discontinuities (the Riemann problem). Dissipation is useful to smooth out spurious heating and to treat transport phenomena. A simple, effective solution of the Riemann problem is here proposed, based on an empirical reformulation of the equation of state (EoS) in the Euler equations in fluid dynamics, whose limit for a motionless gas coincides with the classic EoS of ideal gases. Results on 1D shock tube tests are here shown, as well as a 3D transport application on accretion discs in close binaries (CBs).

Affiliated with

Also associated with

No associations

Rating

An approach to the Riemann problem for SPH inviscid ideal flows: consequences for the state equation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An approach to the Riemann problem for SPH inviscid ideal flows: consequences for the state equation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An approach to the Riemann problem for SPH inviscid ideal flows: consequences for the state equation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-373359