Turbulence chemistry interaction via eddy dissipation model for scramjet analysis and design

Hoste, Jimmy John O.E. and Fossati, Marco and Taylor, Ian J. and Gollan, Rowan J.; Owen, Roger and de Borst, Rene and Reese, Jason and Pearce, Chris, eds. (2018) Turbulence chemistry interaction via eddy dissipation model for scramjet analysis and design. In: Proceedings of the 6th European Conference on Computational Mechanics. International Centre for Numerical Methods in Engineering, CIMNE, GBR, pp. 684-695. ISBN 9788494731167

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Abstract

This paper considers the Eddy Dissipation Model to address the combustion process inside scramjet engines designed to operate at high flight Mach numbers. The aim is to demonstrate the most appropriate use of the model for design purposes. To this end, two hydrogen-fueled experimental scramjet configurations with different fuel injection approaches are studied numerically. In the case of parallel fuel injection, it is demonstrated that relying on estimates of ignition delay from a one-dimensional kinetics program can greatly improve the use of the EDM. In the second case, the transverse injection of hydrogen resulted in an overall good agreement of the model with experimental pressure traces except in the vicinity of the injection location. Overall, the EDM appears to be a suitable tool for scramjet combustor design incorporating a parallel or transverse fuel injection mechanism.

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