Bifurcation of Subsonic Gas Flows in the Vicinity of Localized Heat   Release Regions
  Time-accurate simulation of gas dynamic structures resulting in viscous, heat conducting and radiating gas flows through localized heat release areas is performed. Cases of intensive heat release in to air at atmospheric pressure are investigated, whereby the gas is heated up to temperatures 3000-20000 K, so that local differences of density reach tens and hundreds times. Bifurcation of the gas dynamic structure has been found at certain relation between gas velocity and heat release power. 
S. T. Surzhikov