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Influence of cooling on dynamics of buoyant jet

Research paper by V. P. Goncharov, V. I. Pavlov

Indexed on: 01 Feb '16Published on: 01 Feb '16Published in: Physics - Fluid Dynamics



Abstract

The Rayleigh--Taylor instability which is responsible for the occurrence of narrow upward jets are studied in the scope of the nonhydrostatic model with horizontally--nonuniform density and the Newtonian cooling. As analysis shows, the total hierarchy of instabilities in this model consists of three regimes -- collapse, algebraic instability, and inertial motion. Realization of these stages, mutual transitions and interference depend on a ratio between two characteristic time scales -- collapse time and cooling time.