Analysis of the influence of factor parameters on bubble collapse in a heavy metal complex system

Abstract

Hydrodynamic cavitation technology has become a research hotspot of scholars in various fields. However, existing microscopic research lacks a summary of the rules of the influence of various factors on bubble collapse in a heavy metal complex system, such that efficient and stable decomplex treatment and extensive engineering applications are impossible to achieve. To grasp the main influencing factors of bubble collapse, this study establishes a heavy metal complex model with bubbles of different radii, regards pressure energy (P), collapse time (t), and the area change rate of bubbles (Aε) as research objects, and summarizes the influence of strain rate (ε), and bubble radius (R), temperature (T) on bubble collapse to contrast the verification with the R-P equation. Results show that the time of bubble collapse is shortened as the strain rate increases. As the bubble radius increases, the time of bubble collapse becomes longer, and the maximum pressure released by bubble collapse first decreases and then increases. With the increase in strain rate and bubble radius, the area change rate first increases and then decreases, until it remains unchanged. The maximum pressure released has a decreasing trend with the increase in temperature, and the temperature has an evident influence on small bubbles. The time and area change rate by bubble collapse in the simulation process are in accordance with the change law of the derivation of the R-P equation, which has been verified by theory. The results in this paper provide technical guidance and theoretical basis for the realization of decomplex.