Comparative analysis of alternative fuels in detonation combustion

Azami, Muhammad Hanafi and Savill, Mark (2016) Comparative analysis of alternative fuels in detonation combustion. In: 52nd AIAA/SAE/ASEE Joint Propulsion Conference, 25th-27th July 2016, Salt Lake City, Utah, US.

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Abstract

Detonation combustion prominently exhibits high thermodynamic efficiency which leads to better performance. As compared to the conventionally used isobaric heat addition in a Brayton cycle combustor, detonation uses a novel isochoric Humphrey cycle which utilises shocks and detonation waves to provide pressure-rise combustion. Such unsteady combustion has already been explored in wave rotor, pulse detonation engine and rotating detonation engine configurations as alternative technologies for the next generation of the aerospace propulsion systems. However, in addition to the better performance that the detonation mode of combustion offers, it is crucial to observe the environmental concerns as well. Therefore, this paper presents a one-dimensional numerical analysis for alternative fuels: Jet-A, Acetylene, Jatropha Bio-synthetic Paraffinic Kerosene, Camelina Bio-synthetic Paraffinic Kerosene, Algae Biofuel, and Microalgae Biofuel under detonation combustion conditions. For simplicity, the analysis is modelled using an open tube geometry. The analysis employs the Rankine-Hugoniot Equation, Rayleigh Line Equation, and Zel’dovich–von Neumann–Doering model and takes into account species mole, mass fraction, and enthalpies-of-formation of the reactants. Initially, minimum conditions for the detonation of each fuel are determined. Pressure, temperature, and density ratios at each stage of the combustion tube for different types of fuel are then explored systematically. Finally, the influence of different initial conditions is numerically examined to make a comparison for these fuels.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	8177/65279
Uncontrolled Keywords:	aircraft propulsion, algae, alternative fuels, biofuels, Brayton cycle, combustion, fuels, kerosene, propulsion, synthetic fuels
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500 Aeronautics T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL780 Rockets
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Dr Muhammad Hanafi Azami
Date Deposited:	13 Sep 2018 16:27
Last Modified:	13 Sep 2018 16:27
URI:	http://irep.iium.edu.my/id/eprint/65279

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