SV型静态混合器湍流阻力的初步研究  

Preliminary study on turbulent flow resistance of SV static mixer

作　　者：张春梅[1,2] 吴剑华[2] 王宗勇[2] 

机构地区：[1]天津大学化工学院,天津300072 [2]沈阳化工学院机械工程学院,辽宁沈阳110142

出　　处：《化学工程》2009年第1期19-23,共5页Chemical Engineering(China)

基　　金：国家"十五"科技攻关项目(2004BA319B1)

摘　　要：为了获得流体在SV型静态混合器中湍流流动时的流动阻力规律,提出一种新的含有SV型静态混合器重要几何结构参数的流体阻力计算模型。对于不可压缩流体,将其在SV型静态混合器中的运动分解成沿管壁与轴线方向平行和沿混合元件凹槽方向的直线运动。运用流体力学理论,分别求解出流体作2种运动时所产生的湍流流体阻力的计算式,并计入相邻混合元件交接部分的局部阻力,然后进行叠加得到流体阻力理论计算式。以水为实验介质,对SV型静态混合器流体湍流阻力进行了实验测量,与理论结论进行比较分析,得出摩擦因子λ与Re-0.2呈线性关系的结论。In order to acquire resistance was put forward by the turbulent flow resistance rule in SV static mixer, a new numerical model of fluid taking many important geometry parameters of the SV static mixer into account. Under the precondition of incompressible flow, the fluid spiral motion in SV static mixer was resolved into axial beeline motion along the wall of the tube and beeline motion along the mixing unit. Based on the theories of hydromechanics, the fluid resistance expressions of the two motions under the states of turbulent flow were obtained individually. By reduplicating them, the calculating formula of normal SV static mixer tube for flow resistance was drawn. With water as experimental fluid, the turbulent fluid resistance in the SV static mixer was measured and the experimental formula was regressed by measuring the fluid resistance in the normal SV static mixer. By comparing and analyzing the theoretical results and experimental conclusions, a linear relationship between fluid friction factor A and Re^-0.2 was concluded.

关 键 词：静态混合器 湍流 流体阻力 摩擦因子 

分 类 号：TQ051.71[化学工程]