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Effect of free stream angle on mixing performance of hydrogen multi-jets in supersonic combustion chamber
Affiliation:1. School of Mechatronics Engineering, China University of Mining and Technology, Xuzhou, 211006, China;2. Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Islamic Republic of Iran;3. Renewable Energy Systems and Nanofluid Applications in Heat Transfer Laboratory, Babol Noshirvani University of Technology, Babol, Iran;4. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;5. Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;6. Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;7. Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;8. Department of Chemical Engineering, School of Engineering & Applied Science, Khazar University, Baku, Azerbaijan;9. MJU-BNUT Department-Joint Research Center on Renewable Energy and Sustainable Marine Platforms, Engineering Research Center of Fujian University for Marine Intelligent Ship Equipment, Minjiang University, Fuzhou, 350108, China;10. School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, NSW, 2522, Australia;1. Engineering Research Center of Fujian University for Marine Intelligent Ship Equipment, Minjiang University, Fuzhou, 350108, China;2. School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, NSW, 2522, Australia;3. Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam;4. Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran;5. Department of Chemical Engineering, School of Engineering & Applied Science, Khazar University, Baku, Azerbaijan;6. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam;7. Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam;1. Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam;2. Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran;3. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;4. Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;5. Department of Chemical Engineering, School of Engineering & Applied Science, Khazar University, Baku, Azerbaijan;1. Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran;2. Department of Chemical & Petroleum Engineering, Sharif University of Technology, Tehran, Iran;3. Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran;4. Department of Mechanical & Aerospace Engineering, Ramsar Branch, Islamic Azad University, Ramsar, Iran;1. School of Mechanical and Automative Engineering, Qingdao University of Technology, Qingdao 266520, China;2. Center of Research Excellence in Renewable Energy and Power Systems, Department of Mechanical Engineering, Faculty of Engineering, K. A. CARE Energy Research and Innovation Center, King Abdulaziz University, Jeddah, Saudi Arabia;3. Faculty of Marine Sciences-Marine Geology, King Abdulaziz University, P.O. Box 80207, Jaddah, Saudi Arabia;4. Department of Chemical Engineering, School of Engineering & Applied Science, Khazar University, Baku, Azerbaijan;1. Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha, Hunan 410073, People''s Republic of China;2. Department of Mechanical Engineering, Institute of Infrastructure Technology Research and Management (IITRAM), Gujarat 380026, India
Abstract:The fuel mixing process within the combustion chamber is a critical procedure for advance of scramjet engine. In current study, the influence of free stream angle on the fuel mixing process of multi jets was thoroughly investigated. This research attempts to applied computational technique to disclose the structure of multi-fuel jets when the supersonic air stream is not normal to the jet direction. The effect of both positive and negative supersonic free stream on the diffusion and penetration of multi-hydrogen jets is fully described. The attention of this research is the flow structure of the multi jets and their interaction in the presence of different free stream angle. Our results indicate that the positive free stream angle expands the mixing zone in the downstream while the negative angle of free stream limited jet distribution inside the combustor. Our results show that mixing efficiency increase approximately 50% when the angle of free stream augments from +20° to −20°. According to our findings, mixing efficiency surges up to 17% when the jet spaces are increased from 4Dj to 10 Dj.
Keywords:Hydrogen multi jets  Supersonic flow  Combustion chamber  Angled free stream  Computational fluid dynamic
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