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200 kHz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 results was performed and an inversion model for quickly calculating the solidphase concentration was sorted 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.

TK31

国家自然科学基金(51476028)；科技部支撑计划（2015BAA03B02）