摘要
基于长波区简化ECAH模型对超声波在两相流中的传播进行数值模拟，对数值模拟结果进行拟合并整理出便于计算固相浓度的反演模型。设计了超声波垂直落粉试验台和超声波测量系统，以均匀粒径玻璃珠作为试验样品，在125和200kHz的超声波频率下进行固相浓度测量实验。结果表明：该方法对不同粒径的玻璃珠有着较好的区分度，浓度测量值与标称值接近，测量误差小于15％，该方法可用于实时测量系统。
A numerical simulation was conducted of the propagation of supersonic waves in a two-phase flow based on a simplified ECAH model in the long wave zone. A fitting of the numerical simulation re- suits was performed and an inversion model for quickly calculating the solid-phase concentration was sor- ted out. A supersonic wave vertical pulverized coal falling test stand and a supersonic wave measurement system were designed. With glass beads in a uniform diameter serving as the test sample, at a supersonic wave frequency of 125 kHz and 200 kHz respectively, a solid-phase concentration measurement test was carried out. The research results show that the method in question enjoys a relatively good discrimination degree of the glass beads in various particle diameters. The concentration measurement values approach to the nominal values,the measuring errors being less than 15%. Therefore,the method in question can be used for real time measurement systems.
作者
潘晗
王培红
PAN Han;WANG Pei-hong(Education Ministry Key Laboratory on Energy Source Heat Transformation and Its Process Monitoring, College of Energy Source and Environment, Southeast University, Nanjing, China, Post Code ： 210096)
出处
《热能动力工程》
CAS
CSCD
北大核心
2018年第2期33-38,共6页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金(51476028)
科技部支撑计划(2015BAA03B02)~~
关键词
超声波
两相流
ECAH模型
实时测量
supersonic wave, two-phase flow, ECAH model, real-time measurement
