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.
Measurement of cavitation induced wall shear stress
Rent:
Rent this article for
USD
10.1063/1.3046735
/content/aip/journal/apl/93/25/10.1063/1.3046735
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/25/10.1063/1.3046735
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Sketch of the geometry of the experiment to correlate the wall shear stress with the bubble dynamics. The bubble is generated at the laser focus at -position . The center of the probe is located at .

Image of FIG. 2.
FIG. 2.

Simultaneous measurement of the bubble shape, the acoustic emission, and the shear stress exerted on the boundary. The selected frames in the top row present the bubble pulsation close to a boundary. The bottom part of each frame is a reflection from the boundary and helps to locate the position of the wall. The bubble collapses aspherically with the formation of a re-entrant jet and deforms during re-expansion into a pancake shape. Acoustic emission (third row) is recorded during the bubble creation and bubble collapses; yet, intense shearing of the liquid close to the boundary (second row, measured at the marked position in the first frame) is only observed after the first collapse. Thus maximum wall shear stress does not occur during bubble collapse but occurs when the radial spreading jet flows across the sensor. The maximum bubble radius is 0.75 mm and the bubble is created 0.8 mm away from the boundary. The dashed vertical lines indicate the time of the picture taken and depicted in the top row.

Image of FIG. 3.
FIG. 3.

In the upper part of the figure the maximum of the wall shear stress as a function of the distance for a stand-off distance of is plotted. At the three marked positions a, b, and c, the time resolved signals are displayed below. The inset of the upper plot depicts the wall shear stress double logarithmically and is compared to the Glauert solution (Ref. 14) with a similarity exponent of (● for and ◇ for ).

Loading

Article metrics loading...

/content/aip/journal/apl/93/25/10.1063/1.3046735
2008-12-24
2014-04-24
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Measurement of cavitation induced wall shear stress
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/25/10.1063/1.3046735
10.1063/1.3046735
SEARCH_EXPAND_ITEM