2024-03-29T15:47:24Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/53022016-02-16T03:14:12Zcom_10261_32com_10261_4col_10261_411
Sound propagation and bubble motion in a cavitating channel
Mettin, Robert
Claussen, Jann-Ohle
Campos-Pozuelo, Cleofé
Bubble motion
Bubble distribution
Cavitation
Acoustic field
Water channels
Ultrasonic frequencies
Ponencia presentada en el XIX Congreso Internacional de Acústica (ICA2007), Madrid, 2-7 Sep 2007.-- PACS: 43.35.Ei.
The acoustic field and the emergence, distribution, and motion of bubbles in two rectangular water channels is investigated at ultrasonic frequencies around 20 kHz. The transducers are positioned at one channel end. We identify a near-field and a far-field region by measuring amplitude and phase of the acoustic pressure within the channels at low intensity. At higher
ultrasonic power, cavitation bubbles close to the transducer show net drift into the channel, while bubbles in the far field form streamers fixed in space. Inbetween, a hopping bubble motion is observed. This can be reproduced by a calculation of bubble drift taking into account Bjerknes forces and rectified gas diffusion into the bubbles.
Peer reviewed
2008-06-25T09:43:33Z
2008-06-25T09:43:33Z
2007-12
comunicación de congreso
http://purl.org/coar/resource_type/c_5794
XIX Congreso Internacional de Acústica (ICA2007)
http://hdl.handle.net/10261/5302
en
ICA2007
NLA-01-008-IP
open
326409 bytes
application/pdf
Sociedad Española de Acústica