A One-dimensional Model for Rayleigh–taylor Instability in Supernova Remnants

Apr 9, 2015
12 pages
Published in:
  • Astrophys.J. 821 (2016) 2, 76
  • Published: Apr 12, 2016
e-Print:

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Abstract: (IOP)
This study presents a method for approximating the multidimensional effects of Rayleigh–Taylor (RT) instability as a modification of the one-dimensional (1D) hydro equations. This modification is similar to the Shakura–Sunyaev α prescription for modeling the coarse-grained effects of turbulence in astrophysical disks. The model introduces several dimensionless tunable parameters that are calibrated by comparing with high-resolution two-dimensional axisymmetric numerical calculations of RT unstable flows. A complete description of the model is presented, along with a handful of test problems that demonstrate the extent to which the 1D model is able to reproduce multidimensional effects.
Note:
  • ApJ Accepted
  • hydrodynamics
  • instabilities
  • ISM: jets and outflows
  • ISM: supernova remnants
  • shock waves
  • turbulence