University of Illinois Urbana-Champaign

Approximate solutions for oblique detonations in hypersonic limit

Powers, Joseph M.; Stewart, D. Scott

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https://hdl.handle.net/2142/112240

Description

Title
Approximate solutions for oblique detonations in hypersonic limit
Author(s)
  • Powers, Joseph M.
  • Stewart, D. Scott
Issue Date
1991-04
Keyword(s)
  • Analytic Solution
  • Oblique Detonations
  • Hypersonic Limit
Abstract
This article describes analytic solutions for hypersonic flow of a premixed reactive ideal gas over a wedge. This flow is characterized by a shock followed by a spatially resolved reaction zone. Explicit solutions are given for the irrotational flow field behind a straight shock attached to a curved wedge and for the rotational flow field behind a curved shock attached to a straight wedge. Continuous solution trajectories exist which connect the state just past the shock to the equilibrium end states found from a Rankine-Hugoniot theory for changes across oblique discontinuities with energy release. The analytic results are made possible by the hypersonic approximation, which implies that a fluid particle's kinetic energy is much larger than its thermal and chemical energy. The leading order solution is an inert oblique shock. The effects of heat release are corrected for at the next order. These results can be used to verify numerical results and are necessary for more advanced analytic studies. In addition, the theory has application to devices such as the oblique detonation wave engine, the ram accelerator, hypersonic airframes, or re-entry vehicles.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 497
  • 1991-6003
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112240
Sponsor(s)/Grant Number(s)
N 00014 86 K 0434 91/04; LANL DOE 9 XG 83831 P 1 91/04
Copyright and License Information
Copyright 1991 Board of Trustees of the University of Illinois

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Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.