Results 71 to 80 of about 8,020 (214)

Acoustic cavitation and bubble dynamics

Archives of Acoustics, 2008
Acoustic cavitation is investigated experimentally and theoretically starting with a single bubble in an acoustic field. The single bubble is trapped in an acoustic resonator and observed by high-speed imaging and acoustic measurements following its transient dynamics to a possible steady state after generation by laser light.
Lauterborn, Werner, Kurz, Thomas, Mettin, Robert, Koch, Philipp, Kroeninger, Dennis, Schanz, Daniel   +5 more
openaire   +2 more sources

Influence Mechanism of Structural Parameters of a Novel Sleeve‐Shaft Counterrotating Hydrodynamic Cavitation Reactor on Cavitation Characteristics and Performance

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study systematically investigates the cavitation characteristics of a novel sleeve‐shaft counterrotating (SSCR) hydrodynamic cavitation reactor using computational fluid dynamics (CFD). Based on the RANS framework combined with the SST k–ω turbulence model and the Zwart–Gerber–Belamri cavitation model, the temporal–spatial evolution of ...
Sitong Guan, Yongxing Song, Peng Zhuang, Jiahui Wang, Zhaoxin Ma, Yi Ge, Weibin Zhang, Jingting Liu   +7 more
wiley   +1 more source

Near-wall double-bubble collapse dynamics and their impact-strengthening role in cavitation-assisted ultrasonic surface rolling

Journal of Mechanical Engineering and Sciences
Ultrasonic Surface Rolling (USR) is a surface deformation strengthening technology. By introducing cavitation effects into USR, the extreme high-pressure shock waves generated by the collapse of microscale bubbles can further enhance the surface ...
Hongbo Li, Jianxin Zheng, Xiao Yu, Junhua Li, Yanyan Yan, Shen Niu   +5 more
doaj   +1 more source

Numerical Calculation on Cavitation Pressure Pulsation in Centrifugal Pump

Advances in Mechanical Engineering, 2014
In order to study the internal flow in centrifugal pump when cavitation occurs, numerical calculation of the unsteady flow field in the WP7 automobile centrifugal pump is conducted based on the Navier-Stokes equations with the RNG k – ε turbulence model ...
Weidong Shi, Chuan Wang, Wei Wang, Bing Pei   +3 more
doaj   +1 more source

Bacterial backpacks for targeted delivery of piezoelectric nanoparticles to enhance sonodynamic immunotherapy

BMEMat, EarlyView.
Leveraging bacterial hypoxia targeting, KBTO NPs accumulate at the tumor site. Under the ultrasound irradiation, KBTO NPs produce reactive oxygen species to kill tumor cells and eliminate bacteria, preventing overgrowth and inflammation. The lysed bacteria act as antigens to trigger antitumor immunity and further enhanced by the immune checkpoint ...
Chongyang Liu, Haohui Zhu, Huaibin Yu, Xijun Zhang, Zhiqin Lei, Wenjing Xu, Xinyu Zhao, Ming Wu, Long Yang, Juanjuan Liu, Zhengbao Zha, Xinghui Si, Jianjun Yuan   +12 more
wiley   +1 more source

Acoustic‐driven surface cleaning with millimeter‐sized bubbles at translational resonance

Droplet, EarlyView.
Time‐lapse visualization comparing bubble trajectories. The top panel (0 Hz) shows a bubble's linear path under no acoustic forcing, while the bottom panel (50 Hz) demonstrates the oscillatory motion induced by acoustic waves at a resonance mode. This mechanism holds promising potential for applications such as surface cleaning.
Yan Jun Lin, Zhengyang Liu, Sunghwan Jung   +2 more
wiley   +1 more source

Influences of inter-bubble interactions on ultrasonic cavitation dynamics and subharmonic emissions in viscoelastic media with nonlinear elasticity

Ultrasonics Sonochemistry
Ultrasonic cavitation in viscoelastic media is a physical process that features in a variety of chemical reactions, food processing, and biomedical applications due to a range of cavitation-associated physical, chemical, and biological effects.
Dui Qin, Qianru Yang, Bingyu Zhang, Wei Wang, Xiaojuan Ji   +4 more
doaj   +1 more source

Photothermal bubble: Dynamics, manipulation, and applications

Droplet, EarlyView.
As a versatile platform for bubble manipulation, photothermal techniques empower diverse operations: planar translation by scanning the laser spot, sustained periodic bouncing from competing thermal and hydrodynamic flows, and even guided 3D trajectories achieved by tailoring the heating configuration.
Man Hu, Feng Wang, Daosheng Deng
wiley   +1 more source

Water Electrolysis Technologies for Extraterrestrial Water Resource Conversion

EcoEnergy, EarlyView.
This paper reviews four water electrolysis technologies for extraterrestrial water conversion: alkaline water electrolysis, proton exchange membrane water electrolysis, solid oxide water electrolysis, and anion exchange membrane water electrolysis. It elaborates on their mechanisms, components, and integration, highlighting challenges such as water ...
Yawen Jiang, Yuan Zhao, Lin Zu, Lili Ling, Yongwei Zhao, Jun Di, Pin Song   +6 more
wiley   +1 more source

Acoustic cavitation, bubble dynamics and sonoluminescence

Ultrasonics Sonochemistry, 2007
Basic facts on the dynamics of bubbles in water are presented. Measurements on the free and forced radial oscillations of single spherical bubbles and their acoustic (shock waves) and optic (luminescence) emissions are given in photographic series and diagrams.
Lauterborn, Werner, Kurz, Thomas, Geisler, Reinhard, Schanz, Daniel, Lindau, O.   +4 more
openaire   +4 more sources