Reference : Radiation Modeling of a Hydrogen-Fueled Scramjet
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Mechanical engineering
Engineering, computing & technology : Aerospace & aeronautics engineering
Radiation Modeling of a Hydrogen-Fueled Scramjet
Crow, Andrew J. mailto [University of Michigan, Ann Arbor, MI, 48105 > > > >]
Boyd, Iain D. mailto [University of Michigan, Ann Arbor, MI, 48105 > > > >]
Terrapon, Vincent mailto [Center for Turbulence Research, Stanford University > > > >]
42nd AIAA Thermophysics Conference 2011, Vol. 3; No AIAA 2011-3769
Curran Associates, Inc.
Red Hook
42nd AIAA Thermophysics Conference
from 27-06-2011 to 30-06-2011,
American Institute for Aeronautics and Astronautics ( AIAA )
Honolulu, Hawaii
[en] Radiation ; Scramjet ; Supersonic ; Heat transfer ; Combustion
[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.
United States Department of Energy
Predictive Science Academic Alliance Program (PSAAP)
Researchers ; Professionals ; Students

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