化工学报2011，Vol.62Issue(12)：3337-3344,8.DOI:10.3969/j.issn.0438-1157.2011.12.005
静电传感器矩阵颗粒局部平均速度空间滤波测量方法
Local particle mean velocity measurement using electrostatic sensor matrix
摘要
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.关键词
颗粒局部平均速度/静电传感器矩阵/气固两相流/空间滤波法Key words
local particle mean velocity/ electrostatic sensor matrix/ gas-solid two-phase flow/ spatial filtering method分类
通用工业技术引用本文复制引用
李健,许传龙,王武民..静电传感器矩阵颗粒局部平均速度空间滤波测量方法[J].化工学报,2011,62(12):3337-3344,8.基金项目
国家自然科学基金项目(50836003,50906012) （50836003,50906012）
国家重点基础研究发展计划项目(2010CB227002) （2010CB227002）
江苏省普通高校研究生科研创新计划项目(CXLX-0108). （CXLX-0108）
