Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1183..220a&link_type=abstract
SHOCK WAVES IN SPACE AND ASTROPHYSICAL ENVIRONMENTS: 18th Annual International Astrophysics Conference. AIP Conference Proceedin
Astronomy and Astrophysics
Astrophysics
Shock Waves, Magnetohydrodynamics, Turbulent Flow, Partial Differential Equations, Planetary Bow Shocks, Interplanetary Shocks, Magnetohydrodynamics And Plasmas, Turbulence Simulation And Modeling, Partial Differential Equations
Scientific paper
An analytic model developed by Ao et al.[1] describes the interaction of turbulence with a thin MHD shock. The interaction is governed by a modified Burgers' equation. In this paper, we solve the modified Burgers' equation numerically for arbitrary oblique MHD shocks. Starting with the classical ideal MHD Rankine-Hugoniot condition, we introduce a perturbed upstream and demonstrate the evolution of the oblique MHD shock structure. We also show the dependence of shock-turbulence interaction on different oblique angles. Our results show that turbulence plays a very important role in modifying shock front structure for oblique MHD shocks. When turbulence is modifying shock front structure, the oblique angle is another important factor. Larger oblique angle turns out to be able to creat a wider smoothed ramp in some regions and higher compression ratio in other regions.
Ao Xianzhi
Zank Gary P.
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