摘要
本文通过对数速度变换,将线柱体液(气)流动图形图1,映射成虚拟流动平面Ω平面图2,然后成功地利用近似映射将二叶黎曼面曲线形区域图2,映射成复势W平面图3区域,利用三角级数展开法计算阻力,所得结果与经典结果完全一致,计算方法简单,显示出这方法的优越性。
In this paper, The liquid (gass) flow graph (Figl) of tube (post) is map onto a plane of invented fluid on two shects plane of Riemann through logarithmic transformation of Velocity. To use successful approximate mapping, The region (Fig2) of curvilinear polygon is map onto a w-plane of complex potential Applying trigonometrical series compute obstruction, The acquired result is completer uniform than classical one. This method compute very simplicity to show advantage.
关键词
近似映射
线柱体
阻力
计算
Tube (post)
approximate mapping obstruction
