低雷诺数的孔板计量数值模拟及其应用  

Numerical Simulation and Application of Flow Through a Pipe Orifice at Low Reynolds Numbers

作　　者：程勇[1] 汪军[1] 蔡小舒[1] 

机构地区：[1]上海理工大学动力学院,上海200093

出　　处：《计量学报》2005年第1期57-59,共3页Acta Metrologica Sinica

摘　　要：以计算流体力学为工具,详细分析计算了流体流过孔板的层流流场分布以及压力降。计算了β=d D=0.5时的流出系数,并根据计算结果拟合出流出系数与Re的关系式。在以往孔板的层流流场模拟中,雷诺数不超过150,而作者所编的计算程序能够计算雷诺数从0～500之间所有孔板流场,从而为实际应用奠定了良好的基础。Based on computational fluid dynamics, the distribution of laminar flow-field and pressure difference are obtained by numerical simulation on flow through orifice plate in detail. According to calculated result, discharge coefficients as a function of Reynolds numbers at d/D = 0.5 is obtained. In the past, the Reynolds numbers was never over 150 about simulation of orifice plate laminar flow-field. In this paper, the simulation program can calculate orifice plate flow-field with Re from 0 to 500. So the result is a good basis for actual application.

关 键 词：计量学 孔板 流出系数 层流 数值模拟 

分 类 号：TB937[一般工业技术—计量学]