特殊多边形蜂窝结构有效传热系数研究  

Effective Heat Transfer Coefficient Research for a Special Polygonal Honeycomb Structure

作　　者：郭瑜超[1] 黄河[1] 何俊[1] 吴存利[1] 段世慧[1] 

机构地区：[1]中国飞机强度研究所,西安710065

出　　处：《导弹与航天运载技术》2014年第4期36-40,共5页Missiles and Space Vehicles

基　　金：国防基础科研计划资助(A0520110018)

摘　　要：针对一种特殊的多边形蜂窝结构,利用蜂窝胞体各表面之间的角系数和杰勃哈特吸收因子计算蜂窝内部辐射引起的有效传热系数,考虑蜂窝结构本身热传导和辐射传热的耦合作用,得到蜂窝结构的耦合传热系数。计算结果表明,随着温度升高,蜂窝结构内部的辐射传热起主导作用,特别是蜂窝胞体内部上下面通过侧壁的间接辐射传热占据主导地位。为了验证方法正确性,建立了蜂窝胞体的细节有限元模型,数值对比分析表明了该方法的正确性。Aiming at a special polygonal honeycomb structure, using the view factors and Gebhart＇s factors within a cell, the effective heat transfer coefficient caused by radiation in the honeycomb structure is calculated. The coupled effective heat transfer coefficient is derived, considering the coupling effect of the honeycomb core＇s heat conduction and heat radiation. The numerical results show that with the increase of temperature, the heat radiation within the cell plays a dominant role, especially for the indirect radiation between the cell＇s upper and lower surface through the side wall. To validate the correctness of the method, a detailed finite element model of honeycomb cell is established and the numerical comparison and analysis demonstrate the correctness of the method.

关 键 词：多边形 蜂窝结构 有效传热系数 角系数 杰勃哈特吸收因子 

分 类 号：V414.7[航空宇航科学与技术—航空宇航推进理论与工程]