Accession Number : ADA320685

Title :   Gas Flow and Heat Protection by Strong Injection in the Shock Wave Interference Region Near the Blunt Body Front Surface.

Descriptive Note : Final rept.,

Corporate Author : TSENTRAL'NYI AERO-GIDRODINAMICHE'SKII INST MOSCOW (RUSSIA)

Personal Author(s) : Bezmenov, V. Ya. ; Boldyrev, S. M. ; Borovoy, V. Ya. ; Chinllov, A. Yu. ; Kazansky, R. A.

PDF Url : ADA320685

Report Date : SEP 1995

Pagination or Media Count : 152

Abstract : Results of the experimental study of the influence of tangential gas injection on the flow and heat transfer in the region of interaction of the impinging planar shock generated by a sharp wedge and a bow shock wave generated upstream of the cylindrical blunted body are presented. The experimental study was conducted in the TsAGI UT-1 wind tunnel at a free stream Mach number of 6, total pressure Po = 20 bar, stagnation temperature To = 670 K, Reynolds number based on the free stream flow parameters and bluntness radius Re = O.19x10(exp 6). A sharp wedge having theta = 15 degrees was used as a shock generator Gas (air and helium) was injected through a tangential slot located either in the symmetry line of the blunted body or at a distance of (Pj = 33 from the symmetry line. In the second case gas was injected in the direction of the symmetry line. In both cases gas was injected into the region of the shock wave interference. The shock generator location, the slot sizes the mass flow rate and pressure of the injected gas were varied. Results of numerical calculations of an inviscid gas flow are also presented.

Descriptors :   *HEAT TRANSFER, *SHOCK WAVES, *FREE STREAM, INJECTION, AIR FLOW, COMPUTATIONAL FLUID DYNAMICS, FLOW VISUALIZATION, GAS DYNAMICS, MASS FLOW, WIND TUNNEL TESTS, RUSSIA, HELIUM, BOW SHOCK, MACH NUMBER, HEAT FLUX, INVISCID FLOW, PRESSURE DISTRIBUTION, REYNOLDS NUMBER, BLUNT BODIES, STAGNATION TEMPERATURE.

Subject Categories : Fluid Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE