Acoustics of Bubbles and Particles in Fluids

Wen Zhang (ANU)

APPLIED SIGNAL PROCESSING SERIES

DATE: 2012-04-12
TIME: 11:00:00 - 12:00:00
LOCATION: RSISE Seminar Room, ground floor, building 115, cnr. North and Daley Roads, ANU
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ABSTRACT:
This presentation will introduce an acoustic technique for potential on-line monitoring of industrial flotation cells. The flotation process is an effective separation method to extract various particulate solids from water and its industrial applications are enormous, such as separating valuable minerals in the mining industry, waste water treatment and deinking paper recycling. Attachment of solid particles onto gas bubbles plays a vital role in the flotation process for solid/solid and solid/liquid separations. This presentation will show that acoustic emission based techniques are particularly applicable to characterise the bubble-particle collision interaction and to estimate solids mass loading on bubbles.
BIO:
Dr. Wen Zhang received the B.E. degree in telecommunication engineering from Xidian University, Xiaan, China, in 2003 and the M.E. degree in electrical engineering (with first class honors) and the Ph.D. degree in electrical engineering from the Australian National University, Canberra, in 2005 and 2010, respectively, where she worked on projects to measure and model the head-related transfer function for spatial sound generation. From February 2010 to March 2012, she has been an OCE Postdoctoral Fellow at CSIRO Process Science and Engineering, Sydney, Australia, and worked on the projects to investigate acoustics of bubbles and particles in fluids. Her primary research interests include sound propagation modelling, spatial sound-field analysis and synthesis, array signal processing, and wireless channel modelling.