金属蜂窝板参数对其传热性能的影响  

Influence of Metallic Honeycomb Parameters on Its Heat Transmission Performance

作　　者：樊卓志[1] 孙勇[1] 段永华[1] 郭中正[1] 饶帅[2] 

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093 [2]昆明理工大学冶金与能源学院,昆明650093

出　　处：《材料导报》2013年第8期147-151,共5页Materials Reports

基　　金：国家863计划项目(2009AA03Z512);稀贵及有色金属先进材料教育部重点实验室开放研究项目(ZDS2010012B)

摘　　要：采用ANSYS有限元方法模拟金属蜂窝板的传热性能,并采用控制变量法和极差分析法研究了金属蜂窝板参数对其传热性能的影响。利用Swann&Pittman经验公式对蜂窝板传热模型进行验证,并深入研究蜂窝板参数对其传热性能的影响。结果表明:公式计算结果和模拟结果十分吻合,本实验建立的模型是合理的;增加蜂窝芯边长和蜂窝芯高度会降低当量热导率,而蜂窝芯厚度、上下蒙皮厚度及内表面发射率的增加会加大当量热导率;随着施加热流密度的增加,蜂窝芯厚度和下蒙皮厚度对当量热导率的影响几乎不变,而蜂窝芯高度、蜂窝单元边长、内表面发射率及上蒙皮厚度会加大对当量热导率的影响,而且各参数对当量热导率影响大小的排序会随着施加热流密度的改变而变化。The ANSYS finite element method was adopted to simulate the heat transmission performance of me- tallic honeycomb panel,and by controlled varible and range analysis method, the influence of metallic honeycomb pa- rameters on heat transmission performance was studied. The model of heat transfer was verified by Swann gc Pittman empirical formula and the influence of metallic honeycomb parameters on thermal performance was studied in depth, the results indicated that the results eaculated by empirical formula were quite consistent with that of simulation, the model here is eorrect, with side length of honeycomb unit and height of core increased, the equivalent thermal conduc- tivity decreased,however, the equivalent thermal eonduetivity increased with thickness of core,the thiekness of outer and inner panel and emissivity of inner surface increased, along with the applied heat flux increased, the influenee of thickness of core and inner panel on equivalent thermal conductivity was almost unaltered, but the height of core, side length of honeycomb unit, emissivity of inner surface and thickness of outer panel increased the influence on equivalent thermal eonduetivity,in addition, order of influence degree of each parameter on equivalent thermal conductivity may changes.

关 键 词：金属蜂窝板 有限元 结构参数 当量热导率 传热性能 

分 类 号：TB11[理学—数学]