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Title: Two-phase air-water stratified flow measurement using ultrasonic techniques

In this paper, a time resolved ultrasound system was developed for investigating two-phase air-water stratified flow. The hardware of the system includes a pulsed wave transducer, a pulser/receiver, and a digital oscilloscope. The time domain cross correlation method is used to calculate the velocity profile along ultrasonic beam. The system is able to provide velocities with spatial resolution of around 1mm and the temporal resolution of 200μs. Experiments were carried out on single phase water flow and two-phase air-water stratified flow. For single phase water flow, the flow rates from ultrasound system were compared with those from electromagnetic flow (EM) meter, which showed good agreement. Then, the experiments were conducted on two-phase air-water stratified flow and the results were given. Compared with liquid height measurement from conductance probe, it indicated that the measured velocities were explainable.
Authors:
; ;  [1]
  1. School of Engineering, Cranfield University, Cranfield, Bedfordshire MK43 0AL (United Kingdom)
Publication Date:
OSTI Identifier:
22271101
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1592; Journal Issue: 1; Conference: 8. international symposium on measurement techniques for multiphase flows, Guangzhou (China), 13-15 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AIR; COMPARATIVE EVALUATIONS; CORRELATIONS; FLOW RATE; FLOWMETERS; PROBES; PULSES; SPATIAL RESOLUTION; TIME RESOLUTION; TRANSDUCERS; TWO-PHASE FLOW; ULTRASONOGRAPHY; VELOCITY; WATER