期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 55, 页码 31118-31129出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.08.017
关键词
Hydrogen jets; Fuel mixing; Step flow; Multi jets; Supersonic flow
资金
- Major Scientific and Technological Innovation Project of Shandong Province [2019JZZY010820]
- Fujian Province Natural Science Foundation [2018J01506]
- University-Industry Cooperation Program of Department of Science and Technology of Fujian Province [2019H6018]
- Fuzhou Science and Technology Planning Project [2018S113, 2018G92]
- Science Fund of Key Laboratory of Hubei Province in Design and Test of Power System of Pure Electric Vehicle [XKQ2020002]
The injection of the hydrogen is the main noteworthy stage for the advance of the supersonic engine. In our computational study, the incidence of the step condition in the upstream of the hydrogen multi-jet is investigated for the augmentation of the fuel distribution in downside of the fuel jets at Mach = 4. To perform our research, a 3-dimensional computational domain is taken to unveil the primary flow organization of the hydrogen jets and its interactions with the freestream for the advance of fuel mixing. This work comprehensively examined the impression of the jet pressure on the mixing value and flow structure. Besides, the three-dimensional outcome of the step on the pattern of the four multi-jets is compared with the single equivalent jet. According to our results, the existence of step improves the fuel mixing efficiency up to 30% close to of early jets. Our findings reveal that increasing the step height from 0.5 to 2 mm enhances the fuel mixing more than 15%. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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