| 烧蚀防热层与结构耦合热传导分析的交替计算法 |
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| 引用本文： | 杨琼梁,史晓鸣,许斌,唐国安.烧蚀防热层与结构耦合热传导分析的交替计算法[J].宇航学报,2011,32(8):1854-1858. |
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| 作者姓名： | 杨琼梁 史晓鸣 许斌 唐国安 |
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| 作者单位： | 1.复旦大学力学与工程科学系, 上海 200433； 2. 上海机电工程研究所, 上海 200233 |
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| 基金项目： | 收稿日期：20100208;修回日期：20110118 |
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| 摘 要： | 考虑到法向热流远高于气流方向热流的特征，烧蚀层简化为沿法线方向的一维移动相变边界传热模型，用有限差分法求解，而弹身、弹翼等结构则用三维有限元热传导模型求解。为了将专用的一维移动相变边界热传导分析程序与通用的三维结构有限元热传导分析程序相结合，引入了涂层—结构—涂层交替计算方法。通过交替计算，最终使烧蚀层与结构的界面满足温度相等、热流平衡的传热协调条件。采用自行编制的烧蚀层热传导计算程序结合通用有限元程序(NASTRAN)计算带有烧蚀防热涂层的弹身和弹翼两个算例，验证了交替计算的收敛性。
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| 关 键 词： | 烧蚀 热防护 瞬态热传导 |
| 收稿时间： | 2010-02-08 |
Alternative Algorithm for Heat Transfer Analysis of Ablative Protection Layer Coupled with Structure |
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| YANG Qiong-liang,SHI Xiao-ming,XU Bin,TANG Guo-an.Alternative Algorithm for Heat Transfer Analysis of Ablative Protection Layer Coupled with Structure[J].Journal of Astronautics,2011,32(8):1854-1858. |
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| Authors: | YANG Qiong-liang SHI Xiao-ming XU Bin TANG Guo-an |
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| Institution: | 1. Department of Mechanics and Engineering Science, Fudan University, Shanghai 200433, China; 2. Shanghai Electro-Mechanical Engineering Institute, Shanghai 200233, China |
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| Abstract: | Considering that the heat flux of normal direction is much greater than that of flow direction,the mathematic model of the ablative protection layer is simplified as an one-dimensional heat transfer model with moving boundary and phase transition.The ablation is solved by using the finite difference method.The heat transfer of the structure is solved by using the three-dimension finite element method(NASTRAN).In order to combine the two different programs,an alternative algorithm between the ablative protec... |
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| Keywords: | Ablation Thermal protection Transient heat transfer |
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