Characteristics of Ultrasonic Flowmeter Located Downstream of Elbow

Abstract

Recently, an enough entrance region for a flowmeter cannot be kept in a compact system including fluid machines. In order to know the possibility of such a compact design, the error of an ultrasonic flowmeter was investigated experimentally. In the experiment, the velocity fields downstream of an elbow were measured by PIV and the error was estimated based on the obtained velocity distribution. The error distribution along the pipe and the dependence of the measurement line were obtained. Furthermore, a flow straightener effect was examined.