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Energies 2017, 10(3), 369; doi:10.3390/en10030369

Pulse Detonation Assessment for Alternative Fuels

Propulsion Engineering Centre, School of Aerospace Transport & Manufacturing, Cranfield University, Cranfield MK43 0AL, UK
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Academic Editors: Antonio Ficarella and Maria Grazia De Giorgi
Received: 28 November 2016 / Revised: 3 March 2017 / Accepted: 9 March 2017 / Published: 15 March 2017
(This article belongs to the Special Issue Combustion and Propulsion)
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Abstract

The higher thermodynamic efficiency inherent in a detonation combustion based engine has already led to considerable interest in the development of wave rotor, pulse detonation, and rotating detonation engine configurations as alternative technologies offering improved performance for the next generation of aerospace propulsion systems, but it is now important to consider their emissions also. To assess both performance and emissions, this paper focuses on the feasibility of using alternative fuels in detonation combustion. Thus, the standard aviation fuels Jet-A, Acetylene, Jatropha Bio-synthetic Paraffinic Kerosene, Camelina Bio-synthetic Paraffinic Kerosene, Algal Biofuel, and Microalgae Biofuel are all asessed under detonation combustion conditions. An analytical model accounting for the Rankine-Hugoniot Equation, Rayleigh Line Equation, and Zel’dovich–von Neumann–Doering model, and taking into account single step chemistry and thermophysical properties for a stoichiometric mixture, is applied to a simple detonation tube test case configuration. The computed pressure rise and detonation velocity are shown to be in good agreement with published literature. Additional computations examine the effects of initial pressure, temperature, and mass flux on the physical properties of the flow. The results indicate that alternative fuels require higher initial mass flux and temperature to detonate. The benefits of alternative fuels appear significant. View Full-Text
Keywords: pulse detonation engine; alternative fuels; biofuels; pressure-gain combustor; propulsion pulse detonation engine; alternative fuels; biofuels; pressure-gain combustor; propulsion
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Azami, M.H.; Savill, M. Pulse Detonation Assessment for Alternative Fuels. Energies 2017, 10, 369.

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