Energy, exergy and ecological analysis and multiobjective optimization of the hydrogen-fueled Scimitar engine with fixed nozzle geometry

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dc.authorid0000-0002-0428-3197
dc.authorid0000-0002-6884-8791
dc.contributor.authorTanbay, Tayfun
dc.contributor.authorDurmayaz, Ahmet
dc.date.accessioned2026-02-12T21:05:32Z
dc.date.available2026-02-12T21:05:32Z
dc.date.issued2022
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractIn this study, an energy, exergy and ecological analysis and multiobjective optimization of the Scimitar engine with fixed core nozzle outlet geometry are carried out at hypersonic cruise conditions. A single-objective optimization is performed first, which revealed that overall efficiency and coefficient of ecological performance are maximized with different optimum nozzle outlet areas, and it propounded the need for a multiobjective optimization. The single objective optimization also showed that decreasing the hydrogen fuel mass flow rate and cruise altitude together with increasing the air mass flow rate and cruise speed improve the performance of the engine. Then, the multiobjective optimization is performed with the utopia point method. It is concluded that for fuel and air mass flow rates of 3.99 kg/s and 178.6 kg/s, respectively, and cruise speed and altitude of Ma = 5.2 and 22 km, respectively, the optimum core nozzle outlet area is 4.00 m(2), when equal weight factors are used for overall efficiency and coefficient of ecological performance. A comparison with the base scenario results showed that the overall efficiency has increased from 55.1% to 57.3%, and the engine size is reduced from 5.38 m(2) to 4.00 m(2) with the multiobjective optimization. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.ijhydene.2022.01.127
dc.identifier.endpage19887
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.issue45
dc.identifier.scopus2-s2.0-85124266484
dc.identifier.scopusqualityQ1
dc.identifier.startpage19876
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2022.01.127
dc.identifier.urihttps://hdl.handle.net/20.500.12885/7015
dc.identifier.volume47
dc.identifier.wosWOS:000810181600008
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260212
dc.subjectScimitar engine
dc.subjectHydrogen fuel
dc.subjectMultiobjective optimization
dc.subjectFixed nozzle geometry
dc.subjectExergy analysis
dc.subjectEcological analysis
dc.titleEnergy, exergy and ecological analysis and multiobjective optimization of the hydrogen-fueled Scimitar engine with fixed nozzle geometry
dc.typeArticle

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