Pulse Detonation Assessment for Alternative Fuels

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 gener...

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Main Authors: Muhammad Hanafi Azami, Mark Savill
Format: Article
Language:English
Published: MDPI AG 2017-03-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/10/3/369
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author Muhammad Hanafi Azami
Mark Savill
author_facet Muhammad Hanafi Azami
Mark Savill
author_sort Muhammad Hanafi Azami
collection DOAJ
description 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.
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spelling doaj.art-a9c6dd2cab9d4588bfbd33666675b9cb2022-12-22T04:22:35ZengMDPI AGEnergies1996-10732017-03-0110336910.3390/en10030369en10030369Pulse Detonation Assessment for Alternative FuelsMuhammad Hanafi Azami0Mark Savill1Propulsion Engineering Centre, School of Aerospace Transport & Manufacturing, Cranfield University, Cranfield MK43 0AL, UKPropulsion Engineering Centre, School of Aerospace Transport & Manufacturing, Cranfield University, Cranfield MK43 0AL, UKThe 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.http://www.mdpi.com/1996-1073/10/3/369pulse detonation enginealternative fuelsbiofuelspressure-gain combustorpropulsion
spellingShingle Muhammad Hanafi Azami
Mark Savill
Pulse Detonation Assessment for Alternative Fuels
Energies
pulse detonation engine
alternative fuels
biofuels
pressure-gain combustor
propulsion
title Pulse Detonation Assessment for Alternative Fuels
title_full Pulse Detonation Assessment for Alternative Fuels
title_fullStr Pulse Detonation Assessment for Alternative Fuels
title_full_unstemmed Pulse Detonation Assessment for Alternative Fuels
title_short Pulse Detonation Assessment for Alternative Fuels
title_sort pulse detonation assessment for alternative fuels
topic pulse detonation engine
alternative fuels
biofuels
pressure-gain combustor
propulsion
url http://www.mdpi.com/1996-1073/10/3/369
work_keys_str_mv AT muhammadhanafiazami pulsedetonationassessmentforalternativefuels
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