金属蜂窝材料换热性能分析快速数值算法  

Fast numerical algorithm for heat transfer efficiency of metallic honeycomb materials

作　　者：张永存[1] 刘书田[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,工程力学系,大连116023

出　　处：《复合材料学报》2008年第3期197-201,共5页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(1033201010721062);973计划(2006CB601205);教育部新世纪优秀人才支持计划(NCET-04-0272)

摘　　要：由于存在一个易于流动的方向并具有较大的面密度，金属蜂窝材料在具有良好的比刚度和比强度的同时也具有良好的散热性能，研究强迫对流下的散热性能对其多功能化设计具有重要意义。蜂窝材料强迫对流换热是流-固耦合传热问题，由于具有大量微结构，直接采用计算流体动力学（CFD）方法进行模拟，计算量巨大，成为进行优化设计的主要障碍。发展具有广泛适用性的高效快速算法具有重要的理论意义和应用价值。针对金属蜂窝强迫对流换热结构，本文中提出了一种快速高效的数值算法，计算速度比有限体积法提高3～4个数量级。通过2个具体算例，验证了该方法的有效性和广泛适用性。Metallic honeycomb material has one easy flow direction and superior surface area to volume ratio, so that it exhibits attractive heat capacity except for the high specific rigidity and specific strength. It is of great significance for multifunctional design to study its heat transfer efficiency subjected to forced convection. The heat transfer in the honeycomb material with a number of micro cells subjected to air convection is difficult to solve by using the method of computational fluid dynamics （CFD） directly, which is the obstacle to design optimization. Thus, it is very valuable in theory and application to develop a fast numerical algorithm. In this paper, the fast numerical algorithm for evaluating the thermal performance of metallic honeycomb materials was presented. It＇s an about 3 -4 order of magnitudes improvement in computational velocity of this method compared with the finite volume method. The validity and applicability of the method were proved by two examples.

关 键 词：金属蜂窝材料 对流换热 快速数值算法 有限体积法 

分 类 号：TB331[一般工业技术—材料科学与工程]