Secondary Radiation-Driven Thermal Instability.
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
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.