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利用CFX数值模拟方法分析2种可变量程弯管流量计的设计思路。结果表明:(1)传统弯管流量计单纯改变测压孔位置不能明显增加低流量时测量压差;(2)节流件可以增加测量压差;(3)机翼型节流件可以将该弯管流量计的测量下限扩展近25%。
Design Method of Two Variable Range Elbow Flowmeters Based on CFX Numerical Simulation. The results show that: (1) the traditional elbow flowmeter simply changes the location of the pressure hole can not significantly increase the pressure measurement of low flow; (2) the throttle can increase the pressure measurement; (3) The lower limit of the elbow flowmeter expansion of nearly 25%.