Time-resolved flowmetering of gas-liquid two-phase pipe flow by ultrasound pulse Doppler method
Ultrasound pulse Doppler method is applied for componential volumetric flow rate measurement in multiphase pipe flow consisted of gas and liquid phases. The flowmetering is realized with integration of measured velocity profile over the cross section of the pipe within liquid phase. Spatio-temporal position of interface is detected also with the same ultrasound pulse, which further gives cross sectional void fraction. A series of experimental demonstration was shown by applying this principle of measurement to air-water two-phase flow in a horizontal tube of 40 mm in diameter, of which void fraction ranges from 0 to 90％ at superficial velocity from 0 to 15 m/s. The measurement accuracy is verified with a volumetric type flowmeter. We also analyze the accuracy of area integration of liquid velocity distribution for many different patterns of ultrasound measurement lines assigned on the cross section of the tube. The present method is also identified to be pulsation sensor of flow rate that fluctuates with complex gas-liquid interface behavior.
Flowmeter ultrasound Doppler method gas-liquid two-phase flow void fraction pipe flow
Yuichi MURAI Yuji TASAKA Yasushi TAKEDA
Faculty of Engineering, Hokkaido University, N13W8, Sapporo 060-8628, Hokkaido, Japan Solution Center, Tokyo Institute of Technology, Tokyo, Japan
国际会议
The 7th International Symposium on Measurement Techniques for Multiphase Flows(第七届国际多相流测试技术会议)
天津
英文
311-318
2011-09-17（万方平台首次上网日期，不代表论文的发表时间）