基于Fluent模拟的超声波流量计安装位置研究  

Study on Install Location of Ultrasonic Flowmeter Based on Fluent Modeling

作　　者：路好[1] 朱红丽[1] 张登攀[1] 李成伟[1] 张安超[1] 

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454000

出　　处：《能源研究与管理》2017年第3期18-22,共5页Energy Research and Management

基　　金：河南省科技攻关项目(142102210051);河南理工大学杰出青年基金项目(J2016-1));河南省高校青年骨干教师资助项目(2016GGJS-038)

摘　　要：以实验室现有泵性能测试装置为基础,开展了基于Fluent的超声波流量计安装位置研究,研究了90°弯管、阀门、管径和流速对管道内流体流场的影响。研究发现,对于充分发展的紊流或湍流,距离90°弯管较近处,流体的流速较为不均,在弯管的内侧会出现流速较低的现象。但在较小管径和较大流速或雷诺数时,超声波流量计的安装位置可以较10D适当提前。当流动状态处于层流时,与管壁接触处的流速明显低于管壁中间。然而随着流速的增加,流体逐渐转变为充分发展的湍流,管道中的流速逐渐变得均匀。Based on the existing pump performance testing device, the install location of ultrasonic flowmeter was carried out using Fluent modeling and the effects of 90° elbow, valve, pipe diameter, and flow rate on fluid flow field was deeply studied. The results showed that for fully developed turbulent flow, the flow rate of the fluid near a distance of 90° elbow was greatly nonuniform and the phenomenon of a low velocity appeared in the inside of the elbow. At a relatively small diameter and a large velocity or Reynolds number, the installation position of the ultrasonic flowmeter could be ahead of the position compared with 10D. When the flow condition was laminar, the flow rate at the contact with the pipe wall was obviously lower than that of the middle of pipe wall. However, with the flow rate increasing, the fluid was gradually transformed into fully developed turbulence flow, and the flow rate in the pipe became uniform.

关 键 词：超声波流量计 安装位置 FLUENT 模拟 

分 类 号：TH814[机械工程—仪器科学与技术]