A piezoelectric ultrasonic transducer (PUT) is widely used in nondestructive testing, medical
imaging, and particle manipulation, etc., and the performance of the PUT determines its …

Transit-time ultrasonic flowmeters (TTUFs) are among the most widely used devices for flow
measurements. However, traditional TTUFs are usually based on a bulk piezoelectric …

In this paper, we propose a non-contact ultrasonic liquid flowmeter based on AlN
piezoelectric micromachined ultrasonic transducer (PMUT) arrays. Two 10 by 10 PMUT …

The technical problems of flow measurement in hypersonic flight could be mitigated through
dual-rotor turbine flowmeters (DRT-FMs). In this study, a visual experiment platform was …

Pipelines are vital method for long distance transportation and they need to satisfy levels of
safety, unwavering quality and efficiency. Large amount of natural resources is wasted due …

In oil–gas-water three-phase flow, the presence of two physically distinct dispersed phases
leads to complex interfacial effects and relative velocities between the phases, which poses …

This paper addresses wave dynamics confined by an elastic fluid-filled pipeline with a
uniform moving flow. The measurement deviation of an ultrasonic flow meter has been …

Noninvasive and real-time flowrate measurement for small pipes is crucial in medical
diagnostics and aviation hydraulic system health monitoring. However, current bulk PZT …

This paper presents a portable and contactless microfluidic flowmeter based on the Nuclear
Magnetic Resonance (NMR) principle, which can measure flow rates up to 2.7 ml/min with …

An air parametric array can generate a highly directional beam of audible sound in air,
which has a wide range of applications in targeted audio delivery. Capacitive …