| 基于Lattice Boltzmann方法的1-3型复合材料热传导特征 |
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| 引用本文： | 冯蕾蕾,雷芳明,高原文.基于Lattice Boltzmann方法的1-3型复合材料热传导特征[J].兰州大学学报(自然科学版),2009,45(3). |
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| 作者姓名： | 冯蕾蕾 雷芳明 高原文 |
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| 作者单位： | 兰州大学,西部灾害与环境力学教育部重点实验室,土木工程与力学学院,兰州,730000 |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划，国家重点基础研究发展规划(973计划) |
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| 摘 要： | 基于玻尔兹曼输运理论及相关的格子玻尔兹曼方法对1-3型复合材料的热传导特征以及等效的热传导系数进行了详细研究.首先给出了计算热传导问题的格子玻尔兹曼法二维几速度不可压缩热模型以及边界条件(恒温、绝热)的处理方式,并在此基础上探讨了圆形、椭圆形、矩形和随机夹杂的1-3型复合材料的传热特征和等效热导率等,展示了给定时刻下,结构上的温度分布特征以及结构上某点温度随时间的变化特征等.数值结果表明:尽管夹杂截面形状对等效热导率有一定的影响,组分仍是等效热导率最主要的影响因素.
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| 关 键 词： | 1-3型复合材料 等效热导率 格子玻尔兹曼方法 |
Lattice Boltzmann method study on the characteristics of thermal transport properties for 1-3 composites |
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| FENG Lei-lei,LEI Fang-ming,GAO Yuan-wen.Lattice Boltzmann method study on the characteristics of thermal transport properties for 1-3 composites[J].Journal of Lanzhou University(Natural Science),2009,45(3). |
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| Authors: | FENG Lei-lei LEI Fang-ming GAO Yuan-wen |
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| Institution: | Key Laboratory of Mechanics on Western Disaster and Environment with the Ministry of Education;School of Civil Engineering and Mechanics;Lanzhou University;Lanzhou 730000;China |
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| Abstract: | Based on the Boltzmann transport theory and lattice Boltzmann methods,the characteristics of heat transport properties and the effective thermal conductivity of 1-3 composite material were investigated. Firstly,a two-dimensional nine-speed(D2Q9) lattice Boltzmann incompressible thermal model and the isothermal and adiabatic boundary condition were provided,then a numerical code based on the lattice Boltzmann method was developed to quantitatively simulate the thermal conductive characteristics of the compos... |
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| Keywords: | 1-3 composite material effective thermal conductivity lattice Boltzmann method |
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