Characteristisation of a recirculating flow using ultrasonic Doppler velocimetry

Abstract

We deal with a metallic GaInSn flow driven by a traveling magnetic field. The flow field in a parallelipedic box was measured by ultrasonic Doppler velocimetry. The mean velocity profiles and fluctuating behavior are obtained. The mean velocity is influenced by the pole pitch of the linear motor. The magnetic field distribution is measured and the Lorentz force is analyzed. The turbulent character of the flow is confirmed by discrete Fourier analysis of the registered signal, the flow exhibits continuous frequency spectrum.