一种三维大气紊流并行仿真算法  

A parallel simulation algorithm of three dimensional atmospheric turbulence

作　　者：高栋栋[1] 许丽人 张鹏[1] 郭圣威[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191 [2]北京市应用气象研究所,北京100029

出　　处：《中国体视学与图像分析》2010年第3期319-323,共5页Chinese Journal of Stereology and Image Analysis

摘　　要：大气环境的动态变化将会影响到空中实体的飞行特性,为了解决综合自然环境中动态大气环境高分辨率和实时性的需求,基于Dryden空间相关函数的理论构建了离散化的三维网格紊流场,并采用矩阵分解的方法实现了并行的三维大气紊流生成算法。通过在集群上的实验结果,分析了并行化生成紊流场的加速比性能,最后经过理论值和仿真值的相关性检验验证了该方法的合理性,为动态大气环境模型的快速生成提供了一种解决思路,对提高综合自然环境中大气环境模型的分辨率具有实际意义。Flight performance is effected by dynamic changes of the atmosphere.To improve the resolution and real-time property of atmospheric model in synthetic natural environment,a three-dimension discrete grid field of turbulence was generated based on Dryden model with spatial correlation function.parallel simulation of the three-dimension atmospheric turbulence was presented,which adopted the method of matrix decomposition.The speedup of the parallel computing was analyzed by experiment on cluster,and the validity was tested by correlation analysis method.It provides a solution of fast-generated dynamic atmospheric model,and has some practical effect to increase the resolution of atmospheric model in synthetic natural environment.

关 键 词：大气紊流 并行计算 相关性 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] X16[自动化与计算机技术—计算机科学与技术]