Experimental and numerical study on bubble-sphere interaction near a rigid wall
Experimental and numerical study on bubble-sphere interaction near a rigid wall
复制标题
刚性壁附近气泡-球体相互作用的实验与数值研究
DOI:
10.1063/1.4993800
复制
发表时间:
2017-09-01
影响因子:
4.6
通讯作者:
Liu, Y. Q.
中科院分区:
文献类型:
--
作者:
Li, S.;Zhang, A. M.;Liu, Y. Q.
This study is concerned with the interaction between a violently oscillating bubble and a movable sphere with comparable size near a rigid wall, which is an essential physical phenomenon in many applications such as cavitation, underwater explosion, ultrasonic cleaning, and biomedical treatment. Experiments are performed in a cubic water tank, and the underwater electric discharge technique (580 V DC) is employed to generate a bubble that is initiated between a rigid wall and a sphere in an axisymmetric configuration. The bubble-sphere interactions are captured using a high-speed camera operating at 52 000 frames/s. A classification of the bubble-sphere interaction is proposed, i.e., “weak,” “intermediate,” and “strong” interactions, identified with three distinct bubble shapes at the maximum volume moment. In the numerical simulations, the boundary integral method and the auxiliary function method are combined to establish a full coupling model that decouples the mutual dependence between the force and t...