Author(s): Yilan Li
Linked Author(s): Yilan Li
Keywords: Cavitation bubble, spark-induced, maximum radius, breakdown voltage
Abstract: In the study of cavitation bubble and the judgment of whether cavitation occurs on the solid boundary, relative distance that bubbles away from the boundary (compared to the radius) matters. It also have an important role to play when the research is related to two-bubble system. Sparked-induced cavitation bubble is one of the most widely used method to generate cavitation bubble. However, so far the size of bubble produced by electric spark is undecided and uncontrolled. Therefore, it is of great significance to try to find a way to control the size of cavitation bubble. First and foremost, it is imperative to find the factors that affect its size. This paper investigates the relation between the breakdown voltage of capacitance and the size of cavitation bubble via high-speed photography. We changed breakdown voltage by adjusting the air-spherical gap. The biggest radius of spark-induced cavitation bubble (RC) was used to clarify the size of the bubble. The results shows linear functional relation between the breakdown voltage of capacitance and maximum radius of the bubble to a certain extent and beyond a certain voltage value, the relation no longer follows the function we just concluded
Year: 2017