Nonlinear growth of dynamical overstabilities in blast waves

Details Nonlinear growth of dynamical overstabilities in blast waves Nonlinear growth of dynamical overstabilities in blast waves

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...407..207m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 407, no. 1, p. 207-218.

Computer Science

Sound

79

Dynamic Stability, Interstellar Matter, Shock Waves, Supernova Remnants, Astronomical Models, Hydrodynamics

Scientific paper

The numerical gasdynamics code ZEUS-2D is used to directly model the dynamical overstabilities in blast waves. The linear analysis is confirmed by perturbing a blast wave with a low-amplitude eigenfunction of the overstability. The amplitude of the perturbations is increased in order to determine the nonlinear behavior of the overstabilities. The overstability is found to saturate due to weak transverse shocks in the shell. Transverse velocities in the dense shell reach the postshock sound speed, and high-density regions with sizes of the order of the shell thickness form. Transverse oscillations continue even after saturation. This confirms and explains the damping of the overstability experimentally discovered by Grun et al. (1991).

Affiliated with

Also associated with

No associations

Rating

Nonlinear growth of dynamical overstabilities in blast waves does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Nonlinear growth of dynamical overstabilities in blast waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear growth of dynamical overstabilities in blast waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1369656