An Experimental Study of Air Bubbles Dynamics in Water at the Rapid Decompression
Abstract
The processes of air bubbles emission in a tap water at the fast decompression are experimentally investigated. Experiments were carried out on the experimental setup - a high-pressure cell with a useful volume of 10.6 cm3. The cell can withstand pressures up to 20 MPa. Rapid decompression was achieved by tearing the aluminum foils due to the slow rise of pressure in the cell by the plunger. The tearing of foils began at a pressure, which was set by a certain number of foils. It is shown that volume of a single bubble compressed to 10 MPa after a rapid decompression at time t = 0.33 s sharply increases. Further at t > 0.5 s large bubbles slowly absorb the nearby small air bubbles. At large time scale (t >3 s) the process of release and redistribution of gas bubbles is completed. A qualitative agreement of theoretical calculations with obtained experimental results is shown.
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References
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