1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Dynamics of cavitation clouds within a high-intensity focused ultrasonic beam
Rent:
Rent this article for
USD
10.1063/1.4812279
/content/aip/journal/pof2/25/7/10.1063/1.4812279
http://aip.metastore.ingenta.com/content/aip/journal/pof2/25/7/10.1063/1.4812279
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Setups for the acoustic cavitation and high-speed digital in-line holography measurements. Reprinted with permission from Y. Lu, J. Katz, and A. Prosperetti, . Copyright 2012 ASME.

Image of FIG. 2.
FIG. 2.

Visualization and quantification of the focal zone of the ultrasonic wave; = 1.44 MPa. (a) A sample hologram showing the instantaneous acoustic wave. The bright bands correspond to high pressure. (b) The distribution of the rms gray levels, showing the partial standing wave structure. Reprinted with permission from Y. Lu, J. Katz, and A. Prosperetti, . Copyright 2012 ASME.

Image of FIG. 3.
FIG. 3.

(a) Annular bubble layers in the pressure nodes at low sound intensity ( = 306 kPa) recorded using white light illumination. (b) A top-view of an early test chamber showing that the bubbles accumulate in the periphery of the focal zone (denoted with dashed circle). Reprinted with permission from Y. Lu, J. Katz, and A. Prosperetti, . Copyright 2012 ASME.

Image of FIG. 4.
FIG. 4.

Superpositions of time series of sample bubble clouds recorded using white light at (a) and (b) high sound level ( = 1.44 MPa), where the speed and diameter of the cloud are periodic, with (a) showing a few samples and (b) containing the entire series; (c) and (d) very high sound level ( = 1.89 MPa), where the cloud becomes large, travels at almost a constant velocity, and maintains constant diameter after the initial growth phase. Here (c) shows a few samples and (d) the entire series.

Image of FIG. 5.
FIG. 5.

A close-up view of the inner structure of a bubble cloud; = 1.44 MPa. This picture is generated by collapsing a series of reconstructed holograms from different depths onto a single plane.

Image of FIG. 6.
FIG. 6.

(a) and (b) Time series of reconstructed holograms (Δ = 167 s) showing the axial locations of two sample bubble clouds in a motion cycle, and the corresponding location of the pressure nodes (thick solid-lines) determined from the distribution of rms pressure levels; = 1.44 MPa. (c) and (d) Corresponding velocity and diameter vs. the cloud location in a motion cycle. Parts (a) and (c) are reprinted with permission from Y. Lu, J. Katz, and A. Prosperetti, . Copyright 2012 ASME.

Image of FIG. 7.
FIG. 7.

A sample original instantaneous hologram showing the reflection of the incident acoustic wave by a large bubble cloud; = 1.89 MPa. The wave on the leeward side of the cloud becomes nearly invisible. The bubbles that are out of focus can be seen in the background.

Image of FIG. 8.
FIG. 8.

(a) A comparison between the measured and predicted [Eq. (26) ] bubble cloud velocity. The error bars indicate the standard deviation of the measured values. (b) The predicted total force and its components; = 1.44 MPa.

Loading

Article metrics loading...

/content/aip/journal/pof2/25/7/10.1063/1.4812279
2013-07-17
2014-04-18
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dynamics of cavitation clouds within a high-intensity focused ultrasonic beam
http://aip.metastore.ingenta.com/content/aip/journal/pof2/25/7/10.1063/1.4812279
10.1063/1.4812279
SEARCH_EXPAND_ITEM