Simulation and Design of the Small Pipe Ultrasonic Flowmeter
ZHAO Wei-guo1,ZHAO Xue-song1,HUANG Chao-chuan1,2
1.College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China
2.Zhejiang Cangnan Instrument Factory, Cangnan, Zhejiang 325800, China
Abstract：In order to solve the problem of small pipe measurement of transit-time ultrasonic flowmeter, the inner acoustic reflection device and tapered pipe were designed. The flow correct coefficient K and its RMS error were adopted as the evaluation standard. The shape, size and distance of the reflectors and the size of tapered pipe were studied with FLUENT software. Then the optimal pipe model was designed. The coefficients of the model at different flow points were also calculated. The simulation results showed that the flow pipe model is stable and can improve the accuracy of the small pipe measurement.
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2012, Vol. 33 
