绕任意轴旋转的矩形截面弯管流动特性研究(续)

利用数值计算的方法研究了绕任意轴旋转的矩形截面弯管内的粘性流动情况，分析了在不同入口距离处离心力和科氏力共同作用下的二次流动、轴向主流的发展变化情况。计算结果表明：F=-4．0时，流动呈现出4一涡结构；F=-4．0的轴向速度矢量图在垂直面内与F=-4．0的轴向速度矢量图正好相反；在大曲率情况下管道内会出现三个轴向速度极值点。

Research on the characteristics of the fluid flow in rotating curved rectangular cross-section duct

An incompressible viscous steady flow through a rotating curved rectangular cross-section duct is studied numerically employing the control volume method .The combine effects of the Coriolis force(due to rotation)and the centrifugal (due to curvature)on the flow structure in different distance from the entrance are examined in details:Results chow that for F=-4.0,the flow has four secondary cells;the distribution of axial speed on the vertical direction when F=-4.0 is reversed as F=4.0;with large curvature ratio ,there are three maximum axial speed points in rotating the rectangular cross-section duct.