Gas bubble detection in liquid metals by means of the ultrasound transit-time-technique
1 Institute of Fluid Mechanics, Chair of Magnetofluiddynamics, Measuring and Automation Technology, Technische Universität Dresden, 01069 Dresden, Germany
2 Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Fluid Dynamics, 01314 Dresden, Germany
3 Institute of Power Engineering and Fluid Mechanics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
Revised: 5 February 2013
Published online: 26 March 2013
In this work the ultrasound-transit time technique is introduced as a versatile method to analyze the bubble dynamics in liquid-metal-gas flows. After discussing the principle of operation and the implementation of the technique, the methods used to extract the positions of the bubbles, their velocities, or their diameters are explained. Finally, the performance of the method is demonstrated for a liquid-metal-gas flow with and without a magnetic field.
© EDP Sciences, Springer-Verlag, 2013