Recent developments in applied mathematics and mechanics: theory, experiment and practice. Devoted to the 80th anniversary of academician N.N.Yanenko

Akademgorodok, Novosibirsk, Russia, June 24 - 29, 2001

Abstracts

Novosibirsk participants

Mixing process investigation of supersonic flows in chamber of mixing of rocket scramjet engine

Kharitonov A.M., Lokotko A.V., Tchernyshyev A.V.

ITAM SB RAS (Novosibirsk)

The results of an experimental and numerical study of mixing of supersonic jets with an internal supersonic flow in a model duct of a rocket scramjet engine are presented. The model is equipped with an inlet, which is located in the external supersonic flow M=4.03. A pylon is installed inside the inlet throat with a multinozzle grid at the pylon base. Supersonic jets of hot gas (hydrogen combustion products) are exhausted from the nozzles. Three pylons differ in geometry and the number of nozzles, and one pylon has nozzles with an elliptic exit cross section.
In all cases, the fields of total and static pressures and total temperatures at 160 points in three cross sections along the chamber was measured. The information obtained allows one to estimate the evolution of the degree of mixing for various pylons.
The model developed and the numerical implementation of the calculation method for the mixing process within the framework of parabolized Navier-Stokes equations in combination with the differential model of turbulence are presented. A comparison of the numerical results for the field of excess temperatures with experimental data demonstrates satisfactory qualitative agreement.

Note. Abstracts are published in author's edition

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