Publications by authors named "Zibo Ren"
Article Synopsis
- * At frequencies above 200 kHz, these bubbles show no significant response, whereas at 100 kHz-200 kHz, they interact with ultrasonic cavitation bubbles, merging and detaching from the substrate.
- * Theoretical analysis indicates that the movement of cavitation bubbles is influenced by acoustic radiation forces, highlighting the effective removal of surface bubbles through ultrasound.
We experimentally, numerically, and theoretically investigate the dynamics of cavitation bubbles in viscous liquids in a tube during a transient process. In experiments, cavitation bubbles are generated by a modified tube-arrest setup, and the bubble evolution is captured with high-speed imaging. Numerical simulations using OpenFOAM are employed to validate our quasi-one-dimensional theoretical model, which effectively characterizes the bubble dynamics.
View Article and Find Full Text PDFThe removal of surface-attached particles with cavitation bubbles is usually attributed to the jetting or shear stresses when bubbles collapse. In this Letter, we report an unexpected phenomenon that millimeter-sized spherical particles made of heavy metals (e.g.
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