Radiation Modeling of a Hydrogen-Fueled Scramjet

Crow, Andrew J.; Boyd, Iain D.; Terrapon, Vincent

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Radiation Modeling of a Hydrogen-Fueled Scramjet

Crow, Andrew J.; Boyd, Iain D.; Terrapon, Vincent

2011 • In 42nd AIAA Thermophysics Conference 2011, Vol. 3; No AIAA 2011-3769

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Keywords :

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.

Disciplines :

Aerospace & aeronautics engineering
Mechanical engineering

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

Language :

English

Title :

Radiation Modeling of a Hydrogen-Fueled Scramjet

Publication date :

June 2011

Event name :

42nd AIAA Thermophysics Conference

Event organizer :

American Institute for Aeronautics and Astronautics ( AIAA )

Event place :

Honolulu, Hawaii, United States

Event date :

from 27-06-2011 to 30-06-2011,

Audience :

International

Main work title :

42nd AIAA Thermophysics Conference 2011, Vol. 3; No AIAA 2011-3769

Publisher :

Curran Associates, Inc., Red Hook, United States - New York

ISBN/EAN :

9781618391711

Pages :

1779-1797

Name of the research project :

Predictive Science Academic Alliance Program (PSAAP)

Funders :

DOE - United States. Department of Energy [US-OR]

Available on ORBi :

since 28 July 2011

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