Abstract
A new velocity profile measurement system with ultrasonic phased array technology was developed for flow visualization. Multiple transducers are arranged in a variety of positions to obtain a flow map using the usual ultrasonic velocity profiler, and it causes the measurement system larger. Therefore, anew measurement system employs velocity vector reconstruction method by using only one array sensor and ultrasonic phased array technology. The hardware and software was developed, which is applied phased array technology and can obtain the velocity vector profiles. Two dimensional flow mapping of a Taylor-Couette flow was conducted by the developed system, and the availability of the system was confirmed.