第二边界条件下梯度功能材料一维温度场的数值模拟  

Numerical simulation of one-dimensional thermal field with time-variable heat flux of functionally gradient materials

作　　者：张雁[1] 刘霓生[1] 陈林泉[1] 刘勇琼[1] 王书贤[1] 

机构地区：[1]中国航天科技集团公司四院,西安710025

出　　处：《固体火箭技术》2004年第2期145-148,共4页Journal of Solid Rocket Technology

基　　金：国家自然科学基金资助项目:炭陶功能梯度材料烧蚀和热防护机理研究(50276056)。

摘　　要：采用数值模拟的方法,对梯度功能材料在第二边界条件下温度场进行了分析,并根据所建立的数值方法对新研制的C/C/Al2O3炭陶梯度功能材料和C/C材料进行了比较,对具有不同组分分布曲线的梯度功能材料进行了比较。结果表明,C/C/Al2O3炭陶梯度功能材料的绝热性能优于C/C材料,可通过改变C/C/Al2O3炭陶梯度功能材料的组分分布,优化其内部的温度场分布。The one-dimensional thermal field with time-variable heat flux of functionally gradient materials (FGM) was numerical simulated. By using the numerical simulation method , CCAl2O~3, a novel FGM of carbon-ceramic, was compared with CC material. Various CCAl2O3 materials with different composition mass fraction functions were compared . The results show that the heat-resistant performance of CCAl2O3 is better than that of CC, therefore the thermal field of FGM of carton ceramic can be optimized by changing its compositions mass fraction functions.

关 键 词：梯度功能材料 温度场 数值模拟 第二边界条件 

分 类 号：TB34[一般工业技术—材料科学与工程]