Comparison of three radiative formulations for radiative and convective heat transfer interactions in three dimensional turbulent boundary layers

Conference · Fri Jan 01 00:00:00 EST 1982 · AIAA Pap.; (United States)

OSTI ID:6650701

Kumar, G N ^[1]; Vachon, R I ^[2]

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1. Tuskegee Institute, Tuskegee, AL
2. Vachon, Nix and Associates, Atlanta, GA

The effects of an external source of thermal radiation on a three-dimensional hypersonic turbulent boundary layer over a sharp cone at an angle of attack are evaluated using three radiative interaction formulations: (1) an optically thin limit approximation, (2) an optically thick limit approximation, and (3) a band approximation for the wavelength-dependent properties of the medium. Interactions between radiation and the boundary layer are determined by solving numerically three-dimensional compressible turbulent boundary layer equations together with the energy equation modified to include thermal radiation. It is shown that the total heat flux to the wall is increased by an order of magnitude due to the external source of radiation as compared with the case in which there is no radiation.The band approximation, in general, gives the most accurate results, but requires excessive computer time the optically thin formulation gives reasonably accurate results with moderate computer times.

• OSTI ID: 6650701
• Report Number(s): CONF-820604-; TRN: 83-001608
• Journal Information: AIAA Pap.; (United States), Vol. 82-0911; Conference: AIAA/ASME joint conference on fluids, plasma, thermophysics and heat transfer, St Louis, MO, USA, 7 Jun 1982
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CONVECTION
BOUNDARY LAYERS
RADIANT HEAT TRANSFER
AERODYNAMICS
CONES
FLUID MECHANICS
HYPERSONIC FLOW
TEMPERATURE DISTRIBUTION
THERMAL RADIATION
THREE-DIMENSIONAL CALCULATIONS
ELECTROMAGNETIC RADIATION
ENERGY TRANSFER
FLUID FLOW
HEAT TRANSFER
LAYERS
MECHANICS
RADIATIONS
420400* - Engineering- Heat Transfer & Fluid Flow