Efficiency, thrust, and fuel consumption optimization of a subsonic/sonic turbojet engine

Vivek Patel, Vimal Savsani and Anurag Mudgal

Energy, 2018, vol. 144, issue C, 992-1002

Abstract: This paper presents a rigorous investigation for efficiency, thrust, and fuel consumption optimization of a subsonic/sonic turbojet engine. A thermal model of the turbojet engine is developed for optimization investigation. A many-objective optimization problem is formed by considering maximization of thermal efficiency, propulsive efficiency, specific thrust and minimization of thrust-specific fuel consumption of turbojet engine and solved using multi-objective heat transfer search (MOHTS) algorithm. Results are obtained as a set of Pareto-optimal points for the many-objective problem. Comparative results of many-objective and multi-objective optimization are presented on the two-dimension objective space. Design points having 70.95% thermal efficiency, 60.23% propulsive efficiency, 0.0162 kg/s/kN specific fuel consumption, and 1.1666 kN/kg/s specific thrust are obtained during the optimization. Decision-making approaches like LINMAP, TOPSIS, and fuzzy are used to select the final optimal solution from the Pareto optimal set of the many-objective optimization. Finally, to reveal the level of conflict between these objectives, the distribution of each operating variables in their allowable range is also shown in two-dimension objective spaces.

Keywords: Turbojet engine; Thermal efficiency; Propulsive efficiency; Specific thrust; Thrust-specific fuel consumption; Optimization (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:144:y:2018:i:c:p:992-1002

DOI: 10.1016/j.energy.2017.12.080

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