The high pressure and high temperature of double cavitation bubbles under the sound field
ZHANG Pengli1,2， LIN Shuyu1* , ZHU Huaze2
(1 School of Physics and Information Technology, Shaanxi Normal University,Xi′an 710119, Shaanxi, China;2 College of Science, Xi′an University of Science and Technology, Xi′an 710054, Shaanxi, China)
Abstract:
The pressure and central temperature of double bubbles and the main parameters which would affect the pressure and temperature in the bubble are studied. The results show that the larger cavitation bubble has smaller temperature and pressure.Considering the mutual inhibition between cavitation bubbles, the pressure in double bubbles is larger than that in single cavitation bubble, but the temperature in two bubbles is much smaller than that in single cavitation bubble. In addition, the pressure and temperature in the cavitation bubble are affected by the different frequency, acoustic pressure and amplitude. As increase of frequency,the cavitation bubbles gain smaller pressure and lower temperature.The pressure and temperature in caritation bubble are increasing with acoustic pressure, and the bubbles grow easier in such case.
KeyWords:
cavitation bubble; sound pressure; pressure inside the bubble; temperature
