Accession Number:

ADA181047

Title:

Secondary Radiation-Driven Thermal Instability.

Descriptive Note:

Memorandum rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1987-05-04

Pagination or Media Count:

29.0

Abstract:

By means of numerical simulation we determine the two-dimensional stability properties of the one-dimensional secondary equilibrium state of a radiation-driven thermally unstable fluid reported by Oran, Mariska, and Boris 1982. We find that strong secondary instabilities occur, and that the perturbed system tends to move toward a two-dimensional state. The mass density forms clump-like structures, while the temperature profile exhibits a kink-like instability. In an appendix we formulate an eigenvalue problem for the linear stability of the secondary equilibrium. Keywords Instability Condensation Solar atmosphere.

Subject Categories:

  • Astrophysics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE