静电传感器矩阵颗粒局部平均速度空间滤波测量方法

CIESC Journal

静电传感器矩阵颗粒局部平均速度空间滤波测量方法

李健，许传龙，王式民

东南大学热能工程研究所,江苏南京 210096

出版日期:2011-12-05 发布日期:2011-12-05

Local particle mean velocity measurement using electrostatic sensor matrix

<LI Jian, XU Chuanlong, WANG Shimin

Online:2011-12-05 Published:2011-12-05

摘要/Abstract

摘要：

在圆环状线性静电传感器阵列空间滤波法颗粒速度测量的基础上，提出一种基于圆弧状静电传感器矩阵的气固两相流颗粒局部平均速度测量方法。应用有限元法分析了每一线性电极阵列的敏感空间范围,并从理论上推导了矩阵空间滤波器输出信号的频谱特性与颗粒速度之间的关系。开发了基于圆弧状静电传感器矩阵空间滤波器的颗粒局部平均速度测量系统，并在重力输送颗粒流装置上进行了性能测试实验。实验结果表明：测量系统的重复性优于11%。

Abstract:

Particle velocity is an important parameter describing the flow state of gas-solids two-phase flow. A new spatial filtering method based on arc-shaped electrostatic sensor matrix was proposed for measuring local particle mean velocity of gas-solids two-phase flow.The sensing zone of each linear electrostatic sensor array was analyzed by using the finite element method.The relationship between the frequency spectrum characteristics of output signal of spatial filter matrix and particle velocity was obtained. A measurement system based on the arc-shaped electrostatic sensor matrix was developed. Performance of the measurement system was evaluated on a gravity-fed particles flow apparatus.The results of the particle velocity measurement indicated that each linear electrostatic sensor array of the matrix had its own sensing zone, and its output signal reflected the mean velocity of the particles in the zone.The system repeatability was within ±11%.Theoretical and experimental results demonstrated that the method was feasible.

中图分类号:

10.3969/j.issn.0438-1157.2011.12.005

李健，许传龙，王式民. 静电传感器矩阵颗粒局部平均速度空间滤波测量方法[J]. CIESC Journal.

<LI Jian, XU Chuanlong, WANG Shimin. Local particle mean velocity measurement using electrostatic sensor matrix[J]. .