Abstract
This paper presents a novel measurement method using pulse ultrasound on air-water mixtures flow. The method has the capability to measure an instantaneous echo intensity profile along an ultrasonic beam, so it is expected to apply on pattern recognition of two-phase flow. The principle of the flow pattern recognition is based on delay time and strength of a pulse echo. In this paper, the echo signals reflected on a boundary between water and air, were obtained using an ultrasonic system with a clamp-on transducer, and estimated the effects of two-phase flow pattern, which is from bubbly to slug flow, on the signals.
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