ORBi: Crow Andrew J. - Radiation Modeling of a Hydrogen-Fueled Scramjet

Reference : Radiation Modeling of a Hydrogen-Fueled Scramjet


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Mechanical engineering Engineering, computing & technology : Aerospace & aeronautics engineering
	To cite this reference:	http://hdl.handle.net/2268/96248

Title :	Radiation Modeling of a Hydrogen-Fueled Scramjet
Language :	English
Author, co-author :	Crow, Andrew J. [University of Michigan, Ann Arbor, MI, 48105 > > > >]
	Boyd, Iain D. [University of Michigan, Ann Arbor, MI, 48105 > > > >]
	Terrapon, Vincent [Center for Turbulence Research, Stanford University > > > >]
Publication date :	Jun-2011
Main document title :	42nd AIAA Thermophysics Conference 2011, Vol. 3; No AIAA 2011-3769
Publisher :	Curran Associates, Inc.
Pages :	1779-1797
Audience :	International
ISBN :	9781618391711
City :	Red Hook
Country :	NY
Event name :	42nd AIAA Thermophysics Conference
Event date :	from 27-06-2011 to 30-06-2011,
Event organizer :	American Institute for Aeronautics and Astronautics ( AIAA )
Event place (city) :	Honolulu, Hawaii
Event country :	USA
Keywords :	[en] Radiation ; Scramjet ; Supersonic ; Heat transfer ; Combustion
Abstract :	[en] With the difficulty and cost of full-scale flight experiments, the design of scramjet engines relies heavily on computational simulations. Radiation may play an important role in wall heating and flow cooling of scramjets. However, very few studies have focused on such. The present analysis is based on three-dimensional turbulent reacting flow simulations of the HyShot II hydrogen fueled scramjet engine running at flight conditions of Mach 7.4. A one-dimensional Discrete Ordinates Method analysis with a narrow band averaged spectral model is employed to determine wall heating and flow cooling from thermal radiation. The one-dimensional Discrete Ordinates Method is verifi ed against a three-dimensional ray tracing method. The radiative species considered are H2O and OH. The radiative heat flux is on the order of 10 kW/m2, which is 0.1-0.2% of the total convective wall heat flux. Flow cooling due to radiation is found to be on the order of 2 K. Sensitivity analysis shows that radiation is highly dependent on chamber size, temperature, pressure and radiative species mole fraction. Variations in these factors can explain the differences between previous analyses in the literature that studied hypothetical engines and the current work that models an existing scramjet.
Funders :	United States Department of Energy
Name of the research project :	Predictive Science Academic Alliance Program (PSAAP)
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/96248

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