Original title:
Measurement of the impulsive force generated by colapsing bubble close to a solid boundary
Authors:
Müller, M. ; Unger, J. ; Holata, J. ; Zima, Patrik Document type: Papers Conference/Event: Experimental Fluid Mechanics 2011, Jičín (CZ), 2011-11-22 / 2011-11-25
Year:
2011
Language:
eng Abstract:
The article presents experimental results of the acoustical and optical study of cavitation bubble collapse close to a solid boundary in water. The bubble was generated by discharge of low-voltage capacitor into a couple of wires closing a simple circuit. Different distances from the solid wall and different maximum bubble radii were studied. The bubble radius was studied using time-resolved photography and by PVDF film sensor glued on the solid boundary. The illumination was provided by high-power led diode. Synchronization of the system was provided by pulse generator connected to an oscilloscope. The impact power of the bubble to the wall was estimated from the time-resolved photography of the bubble and from the PVDF film sensor signal. The PVDF film sensor calibration was performed by a pendulum test to estimate the impact force.
Keywords:
bubble; collapse; impact force Project no.: CEZ:AV0Z20760514 (CEP), GAP101/10/1428 (CEP) Funding provider: GA ČR Host item entry: International Conference Experimental Fluid Mechanics 2011, ISBN 978-80-7372-784-0
Institution: Institute of Thermomechanics AS ČR
(web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences. Original record: http://hdl.handle.net/11104/0006694