Cowl and cavity effects on mixing and combustion in scramjet engines

Kang, San Hung, Lee, Yang Ji, Yang, Soo Suek, Smart, Michael K. and Suraweera, Milinda V. (2011) Cowl and cavity effects on mixing and combustion in scramjet engines. Journal of Propulsion and Power, 27 6: 1169-1177. doi:10.2514/1.48818

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Author Kang, San Hung
Lee, Yang Ji
Yang, Soo Suek
Smart, Michael K.
Suraweera, Milinda V.
Title Cowl and cavity effects on mixing and combustion in scramjet engines
Journal name Journal of Propulsion and Power   Check publisher's open access policy
ISSN 0748-4658
Publication date 2011-11
Sub-type Article (original research)
DOI 10.2514/1.48818
Volume 27
Issue 6
Start page 1169
End page 1177
Total pages 9
Place of publication Reston, VA, United States
Publisher American Institute of Aeronautics and Astronautics
Collection year 2012
Language eng
Abstract To investigate the supersonic combustion patterns in scramjet engines, a model scramjet engine was tested in the T4 free-piston shock tunnel. The test model had a rectangular intake, which compressed the freestream flow through a series of four shock waves upstream of the combustor entrance. A cavity flame holder was installed in the supersonic combustor to improve ignition. The freestream test condition was fixed at Mach 7.6, at an altitude of 31 km. This experimental study investigated the effects of varying fuel equivalence ratios, the influence of the cavity flame holder, and the effects of cowl shape. As a result, supersonic combustion was observed at equivalence ratios between 0.11 and 0.18. Measurements indicated that the engine thermally choked at a fuel equivalence ratio of 0.40. Furthermore, the cavity flame holder and the W-shaped cowl showed improved pressure distribution due to greater reaction intensity. With the aid of numerical analysis, the cavity and the W-shaped cowl are shown to be effective in fuel–air mixing.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2012 Collection
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 13 times in Scopus Article | Citations
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Created: Sun, 18 Dec 2011, 16:53:07 EST by System User on behalf of School of Mechanical and Mining Engineering