Investigation of Radiative Interactions in Supersonic Internal Flows PDF Download

Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723186707
Category :
Languages : en
Pages : 182

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Book Description
Analyses and numerical procedures are presented to study the radiative interactions of absorbing emitting species in chemically reacting supersonic flow in various ducts. The 2-D time dependent Navier-Stokes equations in conjunction with radiative flux equation are used to study supersonic flows undergoing finite rate chemical reaction in a hydrogen air system. The specific problem considered is the flow of premixed radiating gas between parallel plates. Specific attention was directed toward studying the radiative contribution of H2O, OH, and NO under realistic physical and flow conditions. Results are presented for the radiative flux obtained for different gases and for various combination of these gases. The problem of chemically reacting and radiating flows was solved for the flow of premixed hydrogen-air through a 10 deg compression ramp. Results demonstrate that the radiative interaction increases with an increase in pressure, temperature, amount of participating species, plate spacing, and Mach number. Most of the energy, however, is transferred by convection in the flow direction. In general the results indicate that radiation can have a significant effect on the entire flow field. Tiwari, Surendra N. and Thomas, A. M. Unspecified Center CHEMICAL REACTIONS; FLOW DISTRIBUTION; FUEL-AIR RATIO; HYDROXYL RADICALS; NITROGEN OXIDES; PREMIXING; REACTING FLOW; SUPERSONIC FLOW; CONVECTIVE FLOW; DUCTED FLOW; ENERGY TRANSFER; GAS FLOW; GAS MIXTURES; MACH NUMBER; NAVIER-STOKES EQUATION; PARALLEL PLATES; SPACING; TIME DEPENDENCE; WATER...