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Title: Nonlinear dynamics of a vapor bubble expanding in a superheated region of finite size

Growth of a vapor bubble in a superheated liquid is studied theoretically. Contrary to the typical situation of boiling, when bubbles grow in a uniformly heated liquid, here the superheated region is considered in the form of a millimeter-sized spherical hot spot. An initial micron-sized bubble is positioned at the hot spot center and a theoretical model is developed that is capable of studying bubble growth caused by vapor pressure inside the bubble and corresponding hydrodynamic and thermal processes in the surrounding liquid. Such a situation is relevant to the dynamics of vapor cavities that are created in soft biological tissue in the focal region of a high-intensity focused ultrasound beam with a shocked pressure waveform. Such beams are used in the recently proposed treatment called boiling histotripsy. Knowing the typical behavior of vapor cavities during boiling histotripsy could help to optimize the therapeutic procedure.
Authors:
 [1] ;  [2] ;  [1] ;  [3]
  1. Physics Faculty, Moscow State University, Leninskie Gory, 119991 Moscow (Russian Federation)
  2. Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, 1013 NE 40th St., Seattle, WA 98105 (United States)
  3. (United States)
Publication Date:
OSTI Identifier:
22492641
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1685; Journal Issue: 1; Conference: 20. international symposium on nonlinear acoustics, Ecully (France), 29 Jun - 3 Jul 2015, 2. international sonic boom forum, Ecully (France), 29 Jun - 3 Jul 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; ANIMAL TISSUES; BEAMS; BOILING; BUBBLE GROWTH; BUBBLES; CAVITIES; HOT SPOTS; LIQUIDS; NONLINEAR PROBLEMS; SPHERICAL CONFIGURATION; VAPOR PRESSURE; VAPORS; WAVE FORMS