| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
Ultrafast Synchrotron X-ray Imaging and Modelling of Ultrasound-driven Bubble-particle Dynamics |
| Author(s) |
Ling Qin, Jiawei Mi |
| On-Site Speaker (Planned) |
Ling Qin |
| Abstract Scope |
A precise understanding of the transportation and dispersion dynamics of nano/micro particles in a liquid medium is scientifically and technologically important in many materials processing sectors. Here, we used ultrafast synchrotron X-ray imaging techniques to study in-situ the dynamics of dispersion and transportation of hydrophobic particles in water in an ultrasound field. Numerical simulations were also carried out to calculate the velocity and kinetic energy transfer along the oscillating bubble boundary and the shock energy released at bubble implosion.
Clusters of hydrophobic MoS2 particles were found to be wrapped around and then entrained by the oscillating cavitation bubbles due to the Rayleigh-Taylor instability caused by the acoustic pressure. The entrained particulates inside the cavitation bubbles were transported by acoustic streaming flow. The oscillating bubbles continued to transfer momentum onto the particulates clusters, and the developed surface waves at bubble boundary, accelerating greatly the dispersion of the trapped particulates clusters. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, Nanotechnology, Modeling and Simulation |