Experimental and Numerical Studies of Radiation Emission from High-Temperature Air Behind 10 km/s Shock Waves

Paper #:
  • 912025

Published:
  • 1991-09-01
Citation:
Honma, H. and Iizuka, H., "Experimental and Numerical Studies of Radiation Emission from High-Temperature Air Behind 10 km/s Shock Waves," SAE Technical Paper 912025, 1991, https://doi.org/10.4271/912025.
Pages:
12
Abstract:
In order to estimate the exact heat transfer from shock-heated air to the re-entering space vehicles, one needs the accurate understanding of its radiative characteristics.The 10 km/s shock waves are produced by a free-piston, double-diaphragm shock tube, and the total and spectral-resolved radiation intensities of the shocked air are observed by using an image converter camera and a pair of photomultipliers.The numerical analysis is carried out for one-dimensional, steady hypersonic flows with non-equilibrium chemical reactions of hot air, including the evaluation of radiation intensity.The double-peak characteristic of radiation intensity for the shock waves above 10 km/s and the time-lag of radiation peak for different wave length are experimentally observed and qualitatively reproduced in numerical simulation.
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