Turbulent Mixing of a Rocket Exhaust Jet With a Supersonic Stream Including Chemical Reactions

摘要: The equations for the turbulent mixing of a two-dimensional supersonic jet issuing into an ambient stream are formulated. Both streams consist mixture chemically active and possibly reacting gases, therefore any heat release by chemical reaction is included; net mass rate production species obtained on assumption that constant given expression reducible to classical Arrhenius law. first in terms x, y coordinates, expressed dimensionless form % \p where function. resulting expressions all "heat conduction" type; they put finite difference using Crank-Nicolson method substituting approximations both " t ime" "space" derivatives. assumed six species, namely H 20. H2, 02 , C02 CO, N2, oxidation H2 CO take place according single-step reaction. solution problem based simultaneous 87V linear algebraic 8N unknowns, N being number internal grid points at every step ^-direction, 8 total unknowns each point, velocity, temperature, concentration species. A obtaining initial boundary conditions from available viscid flow solutions discussed. programed calculation IBM-704 computer. Finally, one typical case considered, plots profiles he stages development layer.