Novosibirsk, Russia, May, 30 – June, 4, 2011

International Conference
"Modern Problems of Applied Mathematics and Mechanics: Theory, Experiment and Applications", devoted to the 90th anniversary of professor Nikolai N. Yanenko

Belyayev Y.   Калтаев А.   Naimanova A.  

2D Simulation of combustion in supersonic flow at the transverse injection of hydrogen

Reporter: Belyayev Y.

     Problem of interaction of hydrogen jet with supersonic air stream occur in the problems of modeling jet engine in rocket and space technology. It is very difficult to maintain (provide) combustion process in scramjet engine and it continues to be a very time consuming problem. Since the airflow is supersonic, fuel in the combustion chamber is remained a very short time (about 1 ms). During this short period of time, the fuel must mix with air at the molecular level and the chemical reaction and combustion should be completed prior to leaving the engine.
      Simulation of nonpremixed turbulent combustion covers a description of the gas dynamic transport processes, diffusion process and mechanism of chemical reactions.
      A mathematical model of this process is described by two-dimensional Reynolds averaged Navier-Stokes equations for multicomponent reactive gas. The turbulence model is defined by the algebraic model of Baldwin-Lomax. The mechanism of chemical reactions is described by seven reactions and seven components Spark’s model.
      The system of Reynolds averaged Navier-Stokes equations is solved using the ENO-scheme of the third order accuracy. Equations for the mass concentrations of chemical components are solved using the scheme of splitting by physical processes: the first step is calculated convective and diffusion transport using ENO-scheme, the second step of the matrix equation for the kinetic terms is solved implicitly.

Abstracts file: abstract Яненко Н.Н..doc

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