Modeling Scramjet Supersonic Combustion Via Eddy Dissipation Model

Hoste, J.-J. O.E., Fossati, M., Taylor, I. J. and Gollan, R. J. (2017) Modeling Scramjet Supersonic Combustion Via Eddy Dissipation Model. In: 68th International Astronautical Congress 2017, Adelaide, Australia, 25-29 Sep 2017,

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Abstract

Scramjet technology has gained considerable interest in multi-stage to orbit design concepts due to its reusability and high specific impulse at high-Mach regimes. The aim of the present work is to introduce Reynolds Averaged Navier-Stokes CFD calculations in the design phase of scramjet vehicles and increase the fidelity of engine performance assessment. The turbulence-chemistry interaction is described by the Eddy Dissipation Model (EDM) introduced by Magnussen and Hjertager, which assumes that turbulent motions and not chemistry is the main driver in the rate of combustion. The use of the EDM is explored by application to three hydrogen fueled scramjet test cases. The model requires constants to be prescribed, which have found to be case dependent. Optimal values for the cases simulated are discussed along with appropriateness of the model for general design simulations. The advantage in computational cost is demonstrated by comparison with a no-model finite-rate chemistry approach.

Item Type:Conference Proceedings
Status:Published
Refereed:No
Glasgow Author(s) Enlighten ID:Taylor, Dr Ian
Authors: Hoste, J.-J. O.E., Fossati, M., Taylor, I. J., and Gollan, R. J.
Subjects:T Technology > TL Motor vehicles. Aeronautics. Astronautics
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Copyright Holders:Copyright © 2017 The Authors
Publisher Policy:Reproduced with the permission of the Author
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