Version 45 (modified by 12 years ago) ( diff ) | ,
---|

# Radiative Instability

## Problem Background

This is a study of the oscillatory instabilities in radiative shocks. Radiatively cooled shocks in a stationary frame will sometimes exhibit oscillatory behavior as the sharp velocity gradient produces pressure imbalances that expand and contract. For more information, the references below detail the problem:

Main references:

[1] *Numerical Analysis of the Dynamic Stability of Radiative Shocks*, Strickland, R. & Blondin, J.M. 1995, ApJ, **449**, 727 link.

[2] *A Numerical Study of the Stability of Radiative Shocks*, Imamura, J. N.; Wolff, M. T.; Durisen, R. H. 1984, ApJ, **273**, 667 link.

## Reason for Test

This is a 1D test to verify that analytic cooling is working correctly. There are 3 tests which each have a different cooling coefficient and power law exponent (beta).

## Results

The new chombo can be verified by comparing it to the density in the reference chombo. The shocked gas has hit the wall and started to oscillate.

TestLog(RadiativeInstability0)
TestLog(RadiativeInstability05)
TestLog(RadiativeInstability1)

### Attachments (1)

- rho_ref.png (9.6 KB ) - added by 13 years ago.

Download all attachments as: .zip

**Note:**See TracWiki for help on using the wiki.