复杂结构角系数计算方法
Numerical computation of view factor of complicated configuration
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摘要: 推导了能束在辐射半球面上均匀分布的角系数计算公式.根据面元间的位置关系,把有限元和能束均匀分布法相结合计算复杂结构的角系数.采用三角形网格统一表示边界面并根据边界面网格进行角系数计算的遮挡判断.计算结果表明,方法的计算精度比有限元法和蒙特卡洛法高,计算效率比蒙特卡洛法高,遮挡判断方法准确高效.Abstract: The formulas of view factor computation of ray uniform distribution on radiant semi-sphere were deduced.View factors were computed by combining finite element method(FEM) and ray uniform distribution according to the position of surface cells.Triangle grid was used to express outline of complicated configuration and judge shading.It was demonstrated by a comparison with FEM and Monte Carlo method that the computing precision and efficiency of this method is higher and shading judgment method is correct and highly efficient.
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Key words:
- view factor /
- finite element method(FEM) /
- ray uniform distribution /
- Monte Carlo method
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