Secondary Radiation-Driven Thermal Instability.

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.

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Document Details

Document Type
Technical Report
Publication Date
May 04, 1987
Accession Number
ADA181047

Entities

People

  • L. P. Goldberg
  • R. B. Dahlburg

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Atmospheres
  • Classification
  • Condensation
  • Conduction (Heat Transfer)
  • Differential Equations
  • Eigenvalues
  • Energy
  • Equations
  • Heat Energy
  • Kinetic Energy
  • Military Research
  • Radiation
  • Security
  • Solar Atmosphere
  • Stratified Fluids
  • Thermal Instability
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Solar Physics