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Thermostructural Responses of Metallic Lattice-Frame Sandwich Structure for Hypersonic Leading Edges
Journal of Thermophysics and Heat Transfer ( IF 1.1 ) Pub Date : 2021-02-25 , DOI: 10.2514/1.t6197
L. Gao 1 , X. C. Zhao 1 , B. Wang 2
Affiliation  

Metallic lattice-frame materials, due to excellent heat transfer performance under high heat flux and mechanical property, are regarded as the potential candidates for a vehicle leading edge. This paper presents a new-style lattice-frame sandwich panel with active heat transfer wall-plate. The heat transfer performance and thermal–structural responses are numerically studied, considering the temperature-dependent mechanical and thermal properties. The effects of geometrical characteristics of the wall-plate channel on heat exchange and hydraulic behavior are explored. The different parent materials and channel types are respectively compared based on the thermal–structural responses of sandwich structure. A relatively optimized sandwich panel is employed as the vehicle leading edge, and the effects of attack angle on heat transfer and thermostructural behavior are discussed, subjected to intense localized heat flux. The metallic lattice-frame sandwich panel with an active heat exchange wall-plate shows attractive potential for a higher- temperature leading edge, which can withstand the hypersonic thermal–mechanical environment. It can still offer a great improvement space in thermal management as leading edges for hypersonic vehicles.



中文翻译:

高超音速前缘金属格构架夹层结构的热结构响应

金属晶格框架材料由于在高热通量和机械性能下具有出色的传热性能,被认为是车辆前沿的潜在候选材料。本文提出了一种新型的带有主动传热壁板的格子框架夹芯板。考虑到温度相关的机械和热性能,对传热性能和热-结构响应进行了数值研究。探索了壁板通道的几何特性对热交换和水力行为的影响。根据三明治结构的热-结构响应,分别比较了不同的母体材料和通道类型。相对优化的夹心板被用作车辆的前缘,讨论了在强烈的局部热流作用下,迎角对传热和热结构行为的影响。具有主动式热交换壁板的金属格构架夹芯板在高温前缘方面具有诱人的潜力,可以承受高超声速的热机械环境。作为高超音速车辆的前沿,它仍然可以在热管理方面提供很大的改进空间。

更新日期:2021-02-25
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