Experimental and Numerical Investigation on Heat Transfer Performance of Water Evaporators with Different Channels and Fin Structures in a Sub-Atmosphere Environment
A water evaporator is a phase change heat exchanger, as a heat sink, especially for high-speed flight vehicles. It is composed of internal channels for convective cooling and external fins for boiling. In this paper, six water evaporators, Hex0–Hex5, are designed with five different internal channel...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/9/11/697 |
| _version_ | 1797469499884044288 |
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| author | Liping Pang Desheng Ma Yadan Zhang Xiaodong Yang |
| author_facet | Liping Pang Desheng Ma Yadan Zhang Xiaodong Yang |
| author_sort | Liping Pang |
| collection | DOAJ |
| description | A water evaporator is a phase change heat exchanger, as a heat sink, especially for high-speed flight vehicles. It is composed of internal channels for convective cooling and external fins for boiling. In this paper, six water evaporators, Hex0–Hex5, are designed with five different internal channels and two different external fins. The VOF simulation models are built to investigate their boiling heat transfer performances in a sub-atmospheric environment. Experimental studies were carried out to verify the accuracy of the numerical model of water evaporator. The simulation results show that the structures of the internal channel and external fin both have an impact on the heat transfer performance. For the internal channels, their height change has much more obvious effect than their structural continuity. For the external fins, the increase of the fin bulge structure helps to improve the heat transfer performance. For the aircraft, the optimal design structure of water evaporator is Hex4 and its heat transfer performance can be improved by 13.31% compared with Hex0. |
| first_indexed | 2024-03-09T19:22:14Z |
| format | Article |
| id | doaj.art-bca86d6b92754366ae1dab6b7456b2a9 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T19:22:14Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-bca86d6b92754366ae1dab6b7456b2a92023-11-24T03:16:01ZengMDPI AGAerospace2226-43102022-11-0191169710.3390/aerospace9110697Experimental and Numerical Investigation on Heat Transfer Performance of Water Evaporators with Different Channels and Fin Structures in a Sub-Atmosphere EnvironmentLiping Pang0Desheng Ma1Yadan Zhang2Xiaodong Yang3School of Aviation Science and Engineering, Beijing University of Aeronautics and Astronautics (BUAA), Beijing 100191, ChinaSchool of Aviation Science and Engineering, Beijing University of Aeronautics and Astronautics (BUAA), Beijing 100191, ChinaXinxiang Aviation Industry (Group) Co., Ltd., Xinxiang 453049, ChinaInstitute of Artificial Intelligence, Beijing University of Aeronautics and Astronautics (BUAA), Beijing 100191, ChinaA water evaporator is a phase change heat exchanger, as a heat sink, especially for high-speed flight vehicles. It is composed of internal channels for convective cooling and external fins for boiling. In this paper, six water evaporators, Hex0–Hex5, are designed with five different internal channels and two different external fins. The VOF simulation models are built to investigate their boiling heat transfer performances in a sub-atmospheric environment. Experimental studies were carried out to verify the accuracy of the numerical model of water evaporator. The simulation results show that the structures of the internal channel and external fin both have an impact on the heat transfer performance. For the internal channels, their height change has much more obvious effect than their structural continuity. For the external fins, the increase of the fin bulge structure helps to improve the heat transfer performance. For the aircraft, the optimal design structure of water evaporator is Hex4 and its heat transfer performance can be improved by 13.31% compared with Hex0.https://www.mdpi.com/2226-4310/9/11/697water evaporatorsub-atmospheric boilingfin structureheat sink |
| spellingShingle | Liping Pang Desheng Ma Yadan Zhang Xiaodong Yang Experimental and Numerical Investigation on Heat Transfer Performance of Water Evaporators with Different Channels and Fin Structures in a Sub-Atmosphere Environment Aerospace water evaporator sub-atmospheric boiling fin structure heat sink |
| title | Experimental and Numerical Investigation on Heat Transfer Performance of Water Evaporators with Different Channels and Fin Structures in a Sub-Atmosphere Environment |
| title_full | Experimental and Numerical Investigation on Heat Transfer Performance of Water Evaporators with Different Channels and Fin Structures in a Sub-Atmosphere Environment |
| title_fullStr | Experimental and Numerical Investigation on Heat Transfer Performance of Water Evaporators with Different Channels and Fin Structures in a Sub-Atmosphere Environment |
| title_full_unstemmed | Experimental and Numerical Investigation on Heat Transfer Performance of Water Evaporators with Different Channels and Fin Structures in a Sub-Atmosphere Environment |
| title_short | Experimental and Numerical Investigation on Heat Transfer Performance of Water Evaporators with Different Channels and Fin Structures in a Sub-Atmosphere Environment |
| title_sort | experimental and numerical investigation on heat transfer performance of water evaporators with different channels and fin structures in a sub atmosphere environment |
| topic | water evaporator sub-atmospheric boiling fin structure heat sink |
| url | https://www.mdpi.com/2226-4310/9/11/697 |
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