Dataset supporting journal publication 'Dynamics of laser-induced cavitation bubble during expansion over sharp-edge geometry submerged in liquid – an inside view by diffuse illumination'
Description
We have studied the dynamics of laser-induced cavitation bubble during its expansion over a sharp-edge (“cliff-like” 90°) geometry submerged in water, ethanol, and polyethylene glycol 300 (PEG). The bubbles were laser-induced on stainless steel samples that were 17 mm wide and with different thicknesses in the range of 0.025-2 mm. The 1064-nm laser pulses with pulse durations of 7-60 ns and pulse energies of 10-55 mJ were used. This dataset contains images, videos and tabulated numerical data. The images were acquired at Faculty of Mechanical Engineering, University of Ljubljana, Slovenia within Jan 21, Feb 7, Apr 8 and Apr 23, 2020. The videos were acquired by a high speed camera at Department of Energy and Hydrocarbon Chemistry, Kyoto University, Japan between Jan 3 – Jan 17, 2020. The acquired images explain the role of illumination conditions in bubble imaging. From the acquired images and videos, it is visible that under certain conditions, a fixed-type secondary cavity is formed behind the edge where low-pressure area develops due to bubble-driven flow of the liquid. A re-entrant liquid injection may occur into the bubble when the bubble overflows the edge of the sample. The tabulated data were obtained by image processing and show the bubble and shockwave radius, velocity and pressure as a function of time. The velocities of the re-entrant jets and the liquid flow velocity at the edge of the samples are tabulated as well.
Files
Steps to reproduce
See Dataset Description.pdf file and the Experimental section in the associated article.