Nonlinear radiative-condensation instability and pattern formation: One-dimensional dynamics

Details Nonlinear radiative-condensation instability and pattern formation: One-dimensional dynamics Nonlinear radiative-condensation instability and pattern formation: One-dimensional dynamics

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrve..47.4337a&link_type=abstract

Physical Review E (Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics), Volume 47, Issue 6, June 1993, p

Physics

27

Macroinstabilities, Hydrodynamics, Phase Transitions: General Studies

Scientific paper

Nonlinear evolution of the radiative-condensation instability is investigated in the intermediate-wavelength limit, when the growth rate is maximal. The dynamics of a confined plasma is considered. This paper treats the planar geometry. Nonlinear reduced equations are derived for the instability, which account for the nonlocal feedback resulting from mass conservation and the finite size of the system. For a bistable heating-cooling function, it is shown that, in contrast to a number of previous studies where the isobaricity condition was employed, one-dimensional coherent patterns (spatial coexistence of two locally stable thermal equilibria, cool and hot) persist for a very long time.

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