Abstract
The motion of a spark-induced cavitation bubble was examined near a solid boundary by high-speed photography and the impulsive pressure generated at its collapsing stage was detected by a local pressure sensor, which was manufactured for trial with four small sensor elements. As a result the impulsive pressures of a shock wave and of a water microjet were separately measured by the local pressure sensor, and the results was ascertained by high-speed photographs of the cavitation bubble, which indicated a microjet was generated at the top surface of the collapsing bubble, impacting one of the pressure sensor elements through the bubble inside at its collapsing stage. Moreover, the diameter of the generated microjet tip and its travelling velocity through the bubble inside were evaluated to be about 0.5 mm and 100110 m/s, respectively.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
