Interface stability in a capillary loop undergoing phase changes in non-gravitational conditions |
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Authors: | ZhengKai Tu Wei Liu ZhiChun Liu XiaoMing Huang |
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Institution: | 1 State Key Laboratory of Advanced Technology for Materials Synthesis and Progressing, Wuhan University of Technology, Wuhan 430070, China;
2 Key Laboratory of Fuel Cell Technology of Hubei Province, Wuhan University of Technology, Wuhan 430070, China;
3 College of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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Abstract: | A mathematical model based on the Lucas-Washburn equation has been developed to address the relationships between capillary height, capillary radius and heat flux in a capillary loop. The stability criteria at the interface are studied in detail by introducing a small perturbation to the interfaces of the capillary loop. The formulae deduced as a consequence are used to analyze the influence of height of the capillary wick and the stability in a capillary loop undergoing phase changes. |
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Keywords: | capillary column phase change Lucas-Washburn equation stability non-gravitational condition |
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