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本文详细探讨了含流道的微桁架夹层面板内部复杂的传热机制,并基于简化假设,提出了一种评估该结构隔热性能的解析模型,建立了该类新型一体化主动冷却热防护结构的隔热性能快速评估方法.通过与Fluent 软件详细的数值模拟结果对比,验证了评估方法的有效性.该研究为新结构的实际应用提供了理论基础.

In this paper,the heat transfer mechanism of micro-truss sandwich panel with channels was investigated.Based on some conservative assumptions,a simple and effective model for evaluating the thermal insulant performance of the sandwich panel was proposed.Meanwhile,a rapid method for evaluating the thermal insulant performance of the new integrative thermal protection structure with active cooling was established.The effectiveness and validity of this analysis model were verified by comparing with the detailed numerical simulation results provided by Fluent software.This study offers a support for the further application of the new structure.

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