Formation of plasma vortices in the near wake of Venus due to the viscous-like interaction with the solar wind

Details Formation of plasma vortices in the near wake of Venus due to the viscous-like interaction with the solar wind Formation of plasma vortices in the near wake of Venus due to the viscous-like interaction with the solar wind

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm41b1878r&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM41B-1878

Physics

Plasma Physics

[2447] Ionosphere / Modeling And Forecasting, [2780] Magnetospheric Physics / Solar Wind Interactions With Unmagnetized Bodies, [6295] Planetary Sciences: Solar System Objects / Venus, [7859] Space Plasma Physics / Transport Processes

Scientific paper

We present results of the numerical simulation of the interaction of the solar wind with the upper ionosphere of Venus, including the effects of viscous-like forces. On the basis of a 2D model, we find that the formation of vortices in the near wake of Venus plasma environment is a natural consequence of the viscous-like interaction. The characteristics of the vortices, for example its shape and size, depend on the value of the effective Reynolds number, which measures the relative importance of viscous-like forces in the flow dynamics. By comparing the results of our simulations with the characteristics of vortices derived from PVO and Venus Express in situ measurements (Perez-de-Tejada et al 2010), we estimate that, in the context of the viscous-like interaction model, a low effective Reynolds number, around 50, characterizes the solar wind flow in the region.

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