A Combined Numerical-Experimental Study on the Noise Power Spectrum Produced by an Electromagnetic Sensor for Slurry Flow
作者机构：College of Agricultural Equipment EngineeringHenan University of Science and TechnologyLuoyang471023China School of Medical InstrumentsShanghai University of Medicine and Health SciencesShanghai201318China
出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)
年 卷 期：2021年第17卷第3期
页 面：511-529页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：National Key Research and Development Program of China Subproject(No.2016YFD0700103) Natural Science Foundation of Henan(Nos.202300410124&19HASTIT021) Key Research and Development Program of Yunnan Province(No.2018ZC001) the National Natural Science foundation of China under Grant No.61801288
主 题：Electromagnetic flow sensor slurry noise power spectrum kinetic energy theorem
摘 要：The signals generated by electromagnetic flow sensors used for slurry fluids are often affected by noise interference produced by interaction with the slurry *** this study,the power spectrum characteristics of the signal are studied,and an attempt is made to determine the relationship between the characteristics of the related noise and the velocity and concentration of the slurry *** experiments are conducted and the related power spectrum curve is obtained processing the signal measured by the sensor with *** simulations are also carried out in the frame of an Eulerian approach in order get additional insights into the considered problem through comparison with the experimental *** following conclusions are drawn:(1)The intensity of noise is directly proportional to the number of solid particles colliding with the electrode of the electromagnetic flow sensor per unit time,and to the square of the average velocity of the flow layer near the pipe wall.(2)With an increase in the slurry noise intensity,the power spectrum curve shifts upward in the logarithmic coordinate system(and vice versa).
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