کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1266367 972275 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The final stage of the collapse of a cloud of bubbles close to a rigid boundary
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
The final stage of the collapse of a cloud of bubbles close to a rigid boundary
چکیده انگلیسی

The final stage of the collapse of a hemispherical cloud of bubbles close to a rigid boundary was investigated by ultra high-speed photography with up to 200 million frames/s. Our investigations reveal two types of secondary shock wave emission during cloud rebound. In the first case, the secondary shock wave emission is a consequence of the free collapse of a bubble within the cloud by the ambient pressure in the fluid. In the second case, it is a consequence of the interaction of the cloud-collapse-induced shock wave with microbubbles situated close to the collapse site of the cloud. The latter can be very powerful, resulting in a secondary shock wave emission with a maximum amplitude of about 0.5 GPa.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 18, Issue 1, January 2011, Pages 59–64
نویسندگان
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