Three dimensional channel effect on the flow characteristics and the performance of hydrogen Knudsen compressors |
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| Authors: | Jianjun Ye Xiaoyi Jiao Shuangling Tang Junda Shao Zhenhua Zhao |
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| Affiliation: | 1. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China;2. School of Environmental and Biochemical Engineering, Nanjing University of Science and Technology, 210094 Nanjing, China;3. The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310027, China |
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| Abstract: | As a new type of the micro fluidic device, Knudsen compressor can provide the potential utilizations on the hydrogen transport in the micro systems. Considering actual structure of the compressor is three-dimensional, flow characteristic studies are the key issue for the performance predictions. Firstly, the model of three-dimensional Knudsen compressor is built, and the validity of the model is proved by comparison with the experimental result. Secondly, the flow behaviors in the three-dimensional model is investigated, and the distributions of pressure and velocity are investigated. Also, the performance of the hydrogen Knudsen compressor in two-dimensional structure and three-dimensional structure are compared and discussed. Thirdly, the three-dimensional hydrogen Knudsen compressors with different width are analyzed, and the pressure increase in different cases of the hydrogen Knudsen compressors are studied. |
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| Keywords: | Hydrogen Knudsen compressor Three-dimensional characteristic Velocity distribution Pressure distribution Pressure increase |
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