均速管流量计测量点定位的随机模拟法  

Stochastic simulation method of annubar flowmeter measurement point positioning

作　　者：颜清[1] 彭小平[2] 

机构地区：[1]上饶师范学院数学与计算机科学学院,江西上饶334001 [2]上饶师范学院化学化工学院,江西上饶334001

出　　处：《计算机与应用化学》2014年第2期235-238,共4页Computers and Applied Chemistry

基　　金：计算机科学与技术江西省特色专业资助项目(赣教高字[2010]28号);2013年江西省高校省级教改立项项目(JXJG-13-16-11);教育部第四批高等学校特色专业建设点资助项目(TS11524);国家自然科学基金资助项目(61165003)

摘　　要：均速管流量计属节能仪表，近年来发展迅速，对其研究日渐增多。确定均速管流量计的测量点的方法有等截面环法、切比雪夫法和对势直线法3种，作者根据流体在圆管管内流动规律提出了第4种方法，即随机模拟法。具1-6个测量点的随机模拟法均速管流量计，根据圆管内充分发展稳定湍流的流速分布呈指数规律，通过随机模拟算法确定测量点的中心距，平均流速平稳、一致，重复性能好。其他3种均速管流量计，随测量点增加而与之接近。均速管流量计阻力消耗相当于孔板流量计的5％，测量精度的稳定性与测量点的定位密切相关，随机模拟法定位具有一定的实用价值。Annubar flowmeter is energy-saving instrument, which is developing rapidly in recent years. The study is of growing. Three methods for determining the measurement point Annubar flowmeter are a uniform method, Chebyshev method as well as logarithmic law. According to the fluid presents in law circle flow tube, the fourth method is mentioned, namely stochastic simulation method. Stochastic simulation method with 1 to 6 measurement point Annubar flowmeter, flow velocity distribution is exponential law according to the circular tube with fully developed steady turbulent flow. The stochastic simulation algorithm to determine the measurement point center distance, average flow steady, consistent, and good repetition＇performance. The other three kinds of Annubar flowmeter are close with the measurement point increase. Annubar flowmeter resistance to consume the equivalent orifice meter 5 %, position stability, measurement precision are of the closely related. Stochastic simulation method has a certain application value.

关 键 词：均速管流量计 测量点 随机模拟 定位方法 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]