Characterization of the bubble cluster and velocity field in the focal region of a lithotripter

被引：1

作者：

Buick, J. M. ^{[1
]}

Cosgrove, J. A.

Eizenhoefer, H.

Higham, R.

Royles, R.

机构：

[1] Univ New England, Armidale, NSW 2351, Australia

[2] Univ Edinburgh, Sch Phys, Fluid & Acoust Grp, Edinburgh EH9 3JZ, Midlothian, Scotland

[3] ETTC Biospace, Profess Sci Ltd, Edinburgh EH9 3JF, Midlothian, Scotland

[4] Dornier MedTech Syst GmbH, D-82234 Wessling, Germany

[5] Univ Edinburgh, Sch Elect Engn, Inst Infrastructrue & Environm, Edinburgh EH9 3JN, Midlothian, Scotland

来源：

NEW JOURNAL OF PHYSICS | 2007年 / 9卷

关键词：

D O I：

10.1088/1367-2630/9/7/240

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The cavitation bubble cluster and the velocity field in the focal region of a lithotripter are investigated. Images of the bubble cluster were captured which show the bubbles increasing in size over approximately 500 mu s before collapsing rapidly. Velocity measurements were obtained using particle image velocimetry. A few milliseconds after the inception of cavitation the velocity field consisted of localized flows with maximum velocities and shear rates of the order of 100mm s(-1) and 50 s(-1) respectively. At times 40 ms after cavitation an average uni-directional flow of the order of 10mm s(-1) was observed. The mechanism by which the flow is generated is also considered.

引用

页数：16

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