Rui MA, Shibin LI, Zhongwei WANG, Lin WANG, Lei ZHANG

DOI Number: XXX-YYY-ZZZ

Conference number: HiSST 2024-00107

Aiming at the thermal control problem of the key parts in hypersonic vehicle, an adsorption autonomous cooling device based on porous media was designed. The transient behavior of two-phase flow and heat transfer inside porous media was studied numerically and experimentally in this paper. The two-phase mixing model was used in the numerical method and verified by the visualization experiment. This work shows that the heat penetration and the flow of cooling medium were slower and more uniform, which improved the temperature control performance and thermal environment adaptability of the cooling device. This is because more capillary suction and heat transfer area were provided by porous media, and the porous media can realize more accurate flow control of the fluid in the active cooling device, so that the effective cooling time can be extended to 4453 s. Moreover, the motion direction of the vapor phase was always opposite to gravity, and the flow direction of the liquid phase was squeezed by the vapor phase and related to the outlet position. After the vapor was formed, the surrounding liquid working medium was squeezed and further vaporized at the two-phase interface. Based on the flow law of vapor-liquid phase, we further optimized the adsorption autonomous cooling device by setting the partition wall structure. It can be observed that the two-phase flow path and the thermal control performance of the device have been further optimized.

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In Categories: 1.Events, HiSST 2024, Thermal and Energy Management
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