Modeling of the heat transfer and flow features of the thermal plasma reactor with counter-flow gas injection |
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| Authors: | Gui-Qing Wu He-Ping Li Cheng-Yu Bao Xi Chen |
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| Affiliation: | 1. Department of Engineering Physics, Tsinghua University, Beijing 100084, PR China;2. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China;1. Hydrogen Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan;2. School of Materials and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China;3. NIMS Synchrotron X-ray Station at SPring-8, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan;1. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan;2. School of Materials and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People''s Republic of China;3. Synchrotron X-ray Station at SPring-8, NIMS, Kouto, Sayo 679-5148, Hyogo, Japan |
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| Abstract: | Modeling study is conducted to reveal the heat transfer and flow features of the thermal plasma reactor with a counter-flow gas injection and used for nano-particle synthesis. The modeling results show that a variety of parameters, such as the temperature and flow rate of the carrier gas, the operation conditions of the plasma torch, the distance between the plasma torch exit and the carrier-gas injector exit, the swirling of the plasma jet or the carrier gas, etc., can all affect appreciably the temperature and flow fields and the locations of the stagnation layers formed in the plasma reactor. An appropriate combination of the operation parameters of the reactor is thus required in order to obtain a suitable stagnation layer for the synthesis of nano-scale particles. |
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