| 热辐射问题的边界元算法 |
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| 引用本文： | 王静,高效伟. 热辐射问题的边界元算法[J]. 导弹与航天运载技术, 2011, 0(1): 46-53 |
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| 作者姓名： | 王静 高效伟 |
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| 作者单位： | 东南大学工程力学系;大连理工大学航空航天学院; |
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| 摘 要： | 介绍一种处理介质热辐射问题的纯边界元算法.该方法在漫射表面以及不考虑介质散射的条件下,只需要在边界划分单元就可求解介质辐射换热问题.利用立体角与微元表面的转换关系,可将沿立体角的积分转化到边界上,形成边界积分方程.在非等温介质问题中,边界积分内部还含有线积分,采用径向积分法计算此线积分.二维和三维算例证明,边界元法是计...
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| 关 键 词： | 热辐射 参与性介质 漫射表面 边界元法 |
A Boundary Element Method for Solving Heat Radiation Problems |
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| Wang Jing,Gao Xiaowei. A Boundary Element Method for Solving Heat Radiation Problems[J]. Missiles and Space Vehicles, 2011, 0(1): 46-53 |
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| Authors: | Wang Jing Gao Xiaowei |
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| Affiliation: | Wang Jing1,2,Gao Xiaowei2(1.Department of Engineering Mechanics,Southeast University,Nanjing,210096,2.School of Aeronautics and Astronautics,Dalian University of Technology,Dalian,116024) |
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| Abstract: | A boundary element method which can be used to solve heat radiation transfer problems without internal cells in the assumptions of diffusive surfaces and no scattering mediums is described.The relationship between the infinitesimal solid angle and the infinitesimal surface can be used to convert the integrals over the solid angle into integrals over the surface bounding the medium,and boundary integral equations can be obtained.For the nonisothermal gray medium,line integrals exist in the boundary integrals... |
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| Keywords: | Heat radiation Participating medium Diffusive surface Boundary element method |
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