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These computational studies examine transient, reactive compressible flow phenomena associated with the
pulse detonation engine or PDE. Simulations of the pulsejet, a related device that involves deflagrations
rather than detonations, has also been performed.
The present emphasis explores magnetohydrodynamic (MHD) augmentation of PDE performance.
The PDE is an intermittent combustion engine that relies on unsteady detonation wave propagation
for combustion and compression elements of the propulsive cycle.

The schematical configuration
of a typical PDE engine, highlighting major features.
The present computations focus on high order numerical simulations
of the generic PDE configuration with simplified and complex reaction
kinetics, so that estimates of engine performance may be made. Both
one- and two-dimensional simulations of the high speed reactive
flow phenomena are performed and compared to determine the applicability
of 1D simulations for performance characterization. Characteristic
engine performance parameters, in addition to engine noise estimates
within and external to the detonation tube, have been computed.
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A clip from a video of
the evolution of the PDE's 2D pressure field (for a full H2-air reaction) numerically
computed (click image to run *.avi movie file, 2.5MB)
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Video of the centerline
pressure as a function of time in the tube (click image to run
*.avi movie file, 0.5MB)
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The current emphasis in these studies focuses on use of high resolution numerical methods and simplified modesl to explore reactive and magnetohydrodynamic (MHD) flow phenomena and performance associated with a range of alternative propulsion devices. These include MHD-augmented Pulse Detonation Rocket Engine (PDRE) concepts and the Pulse Detonation Rocket-Induced MHD Ejector (PDRIME) Concept.
Publications:
- The Pulse Detonation Rocket Induced MHD Ejector (PDRIME) Concept, Cambier, J.-L., Roth, T., Zeineh, C., and Karagozian, A. R., 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Paper AIAA-2008-4688, July, 2008.
- Pulse Detonation Engine Simulations with Alternative
Geometries and Reaction Kinetics, He, X. and Karagozian, A.
R., Journal of Propulsion and
Power, Vol. 22, No. 4, pp. 852-861, 2006.
- Performance and Noise Characteristics of Pulse Detonation
Engines, AIAA Paper AIAA-2004-0469, 42nd AIAA Aerospace Sciences
Meeting, January, 2004.
- Numerical
Simulation of Pulse Detonation Engine Phenomena,
He, X. and Karagozian, A. R., Journal of Scientific Computing, Vol. 19, Nos. 1-3, pp.201-224, December, 2003.
- Detonation Engine Simulations with Alternative Reaction
Kinetics and Geometrical Features, He, X. and Karagozian,
A. R., Paper 03F-70, Western States Section/The Combustion Institute
Fall Meeting, UCLA, October, 2003.
- Numerical
Simulation of Pulse Detonation Engine Reactive Flow Processes,
He, X. and Karagozian, A.R., Paper No. C-29, 3rd Joint Meeting
of the U.S. Section of the Combustion Institute, March, 2003.
- Reactive
Flow Phenomena in Pulse Detonation Engines, He, X. and
Karagozian, A. R., Paper no. AIAA-2003-1171, 41st
AIAA Aerospace Sciences Meeting, January, 2003.
- Numerical
Resolution of Pulsating Detonation Waves, Hwang, P., Fedkiw,
R. P., Merriman, B., Aslam, T. D., Karagozian, A. R., and Osher,
S. J., Combustion Theory and Modelling, Vol. 4, No. 3,
pp. 217-240, September, 2000.
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