Liquid pressure fluctuations around a needle during bubble departures

Abstract The bubble–bubble interaction and bubble–needle are usually caused by liquid flow in the needle or needle’s neighborhood. Moreover, nonlinear changes liquid’s velocity pressure can lead to chaotic bubble departures. In present paper, neighborhood were experimentally numerically investigated. experiment, bubbles generated from a brass into distilled water. A second was placed at distance of 1.5 mm which used generate measure during successive stages It shown that, waiting time, fluctuates slightly. Significant observed growth stage. influence above on growing stage time discussed.