一种基于频率的光纤光栅小型流量计研究  

A Study on Frequency-based Fiber Bragg Grating Small Flowmeter

作　　者：刘明尧[1] 黄梦颖 宋涵 LIU Mingyao;HUANG Mengying;Song Han(School of Mechanical and Electrical Engineering,Wuhan University of Technology,Wuhan 430000,China)

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430070

出　　处：《数字制造科学》2023年第4期243-247,共5页

摘　　要：提出了一种基于频率的光纤光栅小型流量计用于流体流量测量的设计方案。该流量计基于卡门涡街原理,利用发生体后产生脉动流体,通过测得其振动频率来测流体流量。通过对涡街流场二维仿真和三维仿真建模进行了理论分析并确定了Bragg光纤光栅粘贴的位置,实验表明,该流量计具有良好的可行性。A frequency-based fiber Bragg grating flowmeter for small fluid flow measurement is proposed.Based on the principle of the Karman vortex street,the flowmeter measure the fluid flow by gauging the vibration frequency of the pulsating fluid generated post-generator.This paper theoretically analyzes two-dimensional and three-dimensional simulation models of the vortex flow field and determines the optimal positioning of the Bragg fiber grating.Experimental results demonstrate the practical feasibility of this flowmeter.

关 键 词：振动频率 BRAGG光纤光栅 卡门涡街 流量计 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]