| 梯度功能材料的传热与烧蚀计算 |
| |
| 引用本文： | 陈林泉,张雁,王书贤,刘霓生,刘勇琼.梯度功能材料的传热与烧蚀计算[J].科学技术与工程,2004,4(8):663-667. |
| |
| 作者姓名： | 陈林泉 张雁 王书贤 刘霓生 刘勇琼 |
| |
| 作者单位： | 中国航天科技集团公司第四研究院设计部,西安,710025 |
| |
| 基金项目： | 国家自然科学基金(50276056)资助 |
| |
| 摘 要： | 以热化学烧蚀二方程模型为基础，用烧蚀与传热耦合计算的方法，研究了梯度功能材料的烧蚀及热防护机理。以新研制的C／C／Al2O3碳陶梯度功能材料为研究对象，对此类材料的烧蚀率计算公式进行了推导。并将计算结果与试验结果进行比较，两者符合良好，进而分析了材料组分的梯度分布对于烧蚀边界条件下试件内部温度场分布的影响。
|
| 关 键 词： | 梯度功能材料 传热 烧蚀 物理模型 组成成分 |
| 文章编号： | 1671-1815(2004)08-0663-05 |
| 修稿时间： | 2004年4月14日 |
The Ablative Calculation and Analysis of Functionally Gradient Materials |
| |
| CHEN Linquan,ZHANG Yan,WANG Shuxian,LIU Nisheng,LIU Yongqiong.The Ablative Calculation and Analysis of Functionally Gradient Materials[J].Science Technology and Engineering,2004,4(8):663-667. |
| |
| Authors: | CHEN Linquan ZHANG Yan WANG Shuxian LIU Nisheng LIU Yongqiong |
| |
| Abstract: | According to the aerodynamic-thermochemical ablation model, the ablation and thermal protection mechanism of functionally gradient materials are investigated, which are derived by coupling the ablative calculation with heat conduction calculation. Then the ablative ratio formula of C/C/A12O3, which is a type of novel materials, is deduced. At last, the computed results are compared with the test results, according which the effect of the compositions gradiently distributing upon the thermal field under ablative boundary is analyzed. |
| |
| Keywords: | functionally gradient materials ablation heat transfer |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《科学技术与工程》浏览原始摘要信息 |
| 点击此处可从《科学技术与工程》下载免费的PDF全文 |
