Numerical simulations of magnetized jets

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167779· OSTI ID:5288533

Lind, K R; Payne, D G; Meier, D L; Blandford, R D ^[1]

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1. National Radio Astronomy Observatory, Charlottesville, VA (USA)

The present axisymmetric numerical simulations of light hypersonic jets allow unmagnetized jets and jets carrying a dynamically important magnetic field to be contrasted. After decelerating a weakly magnetized jet through a series of weak, oblique shocks, a Mach disk and a strong annular shock are encountered near the outer edges of the contact discontinuity separating the shocked fluid from the shocked ambient gas. Upon passing the annular shock, the gas quickly expands and enters a backflowing cocoon surrounding the jet. The overall speed of advance of the jet is reduced; matter near the jet axis which passes through the terminal Mach disk accumulates in a plug, and gas is discharged into the cocoon by the intermittent shedding of vortices. When magnetic stresses dominate, however, the jet is rapidly decelerated via a Mach disk and strong annular shock. 28 refs.

• OSTI ID: 5288533
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 344; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105 -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTROPHYSICS
COSMIC GASES
COSMIC RADIO SOURCES
FLUID FLOW
FLUID MECHANICS
FLUIDS
GALAXIES
GASES
HYDRODYNAMICS
HYPERSONIC FLOW
INTERSTELLAR MAGNETIC FIELDS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MATHEMATICS
MECHANICS
NUMERICAL ANALYSIS
PLASMA JETS
SHOCK WAVES
SIMULATION
WAVE PROPAGATION