单弯头安装条件对内锥流量计性能影响的仿真研究  

Simulation Investigation on the Effect of Single Elbow Installation Requirement for the Performance Characteristics of Cone Flowmeters

作　　者：李彦梅[1,2] 徐英[2] 张涛[2] 李强[1] 

机构地区：[1]安庆师范学院物理与电气工程学院,安徽安庆246133 [2]天津大学电气与自动化工程学院,天津300072

出　　处：《安庆师范学院学报（自然科学版）》2009年第2期20-24,共5页Journal of Anqing Teachers College(Natural Science Edition)

基　　金：国家"863"计划资助项目(2007AA04Z180);天津市应用基础与面上项目(200708JCYBJC11800)资助

摘　　要：为获取上游弯头安装条件对内锥流量计的性能影响和所需的最短直管段长度，应用计算流体动力学数值仿真，对100mm口径、等效直径比0．45／0．65／0．85的内锥流量计开展了上游单90。弯头的仿真研究。仿真介质为常温水，雷诺数范围；0．498×10^5～4．98×10^5，研究方案分基线和上游单90。弯头两类，共15组。利用平均流出系数相对误差及附加不确定度作为安装条件的主要评价标准，给出了上游单个90°弯头的直管段长度，并与国外研究结论作了比较。The paper investigates the effect on the performance and the shortest straight pipe length of cone flowmenter required for the installation of upstream elbow. Simulation investigation of upstream pipe single 90° elbow are carried out by CFD numerical simulation for cone flowmeters with 100mm diameter and three equivalent diameter ratio 0.45/0. 65/0.85. The medium of simulation is water with normal temperature, and the Reynolds is 0. 498-4. 98 × 10^5. There are two types of scheme ,namely, the baseline and upstream pipe single elbow, and 15 groups experiments in all. Using the relative error and additive uncertainty of the averaged discharge coefficient as the main evaluating criterions, we obtain the length of the straight pipe for the upstream single 90° elbow, and compare the result with the foreign study.

关 键 词：内锥流量计 单90°弯头 流出系数 计算流体动力学 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]