论文部分内容阅读
从N S方程出发 ,得到了轴对称异型断面管纯剪切流动速度分布的一般解 ,进而推出了纯剪切流动有限宽度矩形断面管的速度分布和流量计算公式 ,证明了库特剪切流是有限宽度矩形断面管当宽度趋向无穷大时的一种特例。并对库特剪切流流量的计算误差进行了分析 ,给出了该公式的适用范围 ,同时对有限宽度矩形断面管剪切流公式进行了曲线拟合 ,得到了便于工程使用的流量计算公式。
Starting from the NS equation, the general solution to the pure shear flow velocity distribution of the axially asymmetric cross-section tube is obtained, and then the velocity distribution and flow calculation formula of the pure shear flow rectangular tube with a finite width are deduced. A special case of a rectangular pipe with a finite width when its width approaches infinity. The calculation error of shear flow of Curt is analyzed. The applicable scope of this formula is given. At the same time, the formula of shear flow of rectangular section tube with limited width is curve fitted, and the flow calculation formula .