Study of ultrasonic flowmeter method for open channel flow calculation
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Abstract:
At present there is few research on the ultrasonic flow meter method for flow calculation. This paper presents a systematic study on this method. It elaborates on the ultrasonic flow meter method for flow calculation in terms of the principle of ultrasonic test, the calculation method for theoretical calibration coefficient k1 , the calculation method for channel cross-section area, and the calculation method for field calibration coefficient k2 . It puts forward the linear interpolation method for calculating theoretical calibration coefficient k1 . Taking the Yunhe station of the South-to-North Water Transfer Project as acase study , we used linear interpolation to calculate the theoretical calibration coefficient k1 , and calculated the flow by the ultrasonic flowmeter method. The calculation results were compared with the results of the current meter method. The comparison showed good consistency and controllable error. This study can provide a reference for engineering and technical personnel, provide important technical support to the localization of ultrasonic measurement devices, and provide technical support to the real-time on-line flow monitoring of key navigable channels and low velocity in China.
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