Simulations of Supersonic Astrophysical Jets and Their Environments Using Level Set Methods

Authors:
Youngsoo Ha;Chang Ho Kim;Myungjoo Kang
Affiliations:
National Institute for Mathematical Sciences, Daejeon, South Korea 305-811;Department of Computer Engineering, Glocal Campus, Konkuk University, Chungju, South Korea;Department of Mathematical Sciences, Seoul National University, Seoul, South Korea
Venue:
Journal of Scientific Computing
Year:
2013

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Abstract

Computational fluid dynamics simulations using the WENO method and level set method are applied to high Mach number nonrelativistic astrophysical jets, including the effects of radiative cooling. WENO methods introduced in Liu et al. (J. Comput. Phys., 115:200---212, 1994) have allowed us to simulate HH 1-2 astrophysical jets at Mach number much higher than Mach 80 (Ha et al. in J. Sci. Comput. 24:29---44, 2005). Simulations at high Mach numbers and with radiative cooling are essential for achieving detailed agreement with the astrophysical images. Simulations of interaction between astrophysical jet and environment using level set methods are considered in this paper.