Interface stability in a capillary loop undergoing phase changes in non-gravitational conditions
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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.
Keywordscapillary column phase change Lucas-Washburn equation stability k[non-gravitational condition
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