Grid Convergence of the HYB-Venus Hybrid Simulation

Details Grid Convergence of the HYB-Venus Hybrid Simulation Grid Convergence of the HYB-Venus Hybrid Simulation

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..429..193j&link_type=abstract

Numerical Modeling of Space Plasma Flows, Astronum-2009, proceedings of a conference held 29 June through 3 July 2009 in Chamoni

Physics

Scientific paper

We study the spatial grid convergence of a Venus-solar wind interaction simulation. HYB-Venus, a 3-D hybrid simulation, models the interaction in global scale including the ion kinetic effects. The selection of the spatial resolution is an important factor and can affect the physics in the simulation. Here we show that solutions of the nominal Venus run with cell sizes RV/10, RV/15 and RV/20 (RV is the planet's radius) share similar general characteristics. Especially, the planetary oxygen ion escape rate is not sensitive to the cell size. More quantitatively, the higher resolution, which also means smaller particle noise per physical volume unit, was found to introduce finer structures which could be important and useful in detailed studies of the properties of the Venusian plasma environment.

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