Simulation of the Two-Phase Liquid – Gas Flow through Ultrasonic Transceivers Application in Ultrasonic Tomography

• Main Authors: Zulkarnay Zakaria, Mohd Hafiz Fazalul Rahiman, Ruzairi Abdul Rahim
• Format: Article
• Language: English
• Published: IFSA Publishing, S.L. 2010-01-01
• Series: Sensors & Transducers
• Subjects: Ultrasonic tomography; Ultrasonic transceivers; Liquid and gas flow; Flow measurement system
• Online Access: http://www.sensorsportal.com/HTML/DIGEST/january_2010/P_552.pdf

In this paper, ultrasonic transmission mode tomography was used to visualize the two phase liquid/gas flow in a pipe/vessel. The sensing element consists of 8, 16 and 32 units ultrasonic transceivers were used to cover the pipe cross-section at different time. The motivation of this paper is to analyze the optimum numbers of transceivers which can give the best performance in providing better image of the two phase liquid/gas flow. This paper also details the development of the system including the ultrasonic transduction circuits, the electronic measurement circuits, the data acquisition system and the image reconstruction techniques. Ten conditions of liquid-gas flow have been simulated. The system was found capable of visualizing the internal characteristics and provides the concentration profile for the corresponding liquid and gas phases while the 32 transceivers has provided the best image for the ten conditions applied.