Droplet, EarlyView.Bubble dynamics pose critical bottlenecks to hydrogen evolution reaction efficiency, causing active site isolation, increased ohmic resistance, and concentration overpotential, especially at high current densities. This review comprehensively summarizes passive and active bubble manipulation strategies, elucidates their underlying principles, and ...
Ziwei Guo +10 more
wiley +1 more source
Simple Rules for Cavitation Instabilities in Turbomachinery
, 2001 The present paper focuses on the correlation of cavitation instabilities in turbomachinery with steady cavity length, or a parameter sigma/(2*alpha). A linear stability analysis shows that various types of cavitation instabilities start to occur when the
Tsujimoto, Yoshinobu
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A generalized dimensionless rule linking ultrasound cavitation and separation processes across multiple scales developed by experimental and simulation investigations. [PDF]
Ultrason SonochemZhao X +7 more
europepmc +1 more source
Dynamics of cavitation bubbles in a liquid layer
Droplet, EarlyView.The dynamics of cavitation bubbles within a liquid layer is studied experimentally. Due to the combined effect of the rigid wall and free surface, the bubbles exhibit a significant downward migration. The confinement effect of the rigid wall significantly affects the bubble's collapse morphology, leading to different post‐collapse phenomena of free ...
Jinzhao Liu, Tianyou Wang, Zhizhao Che
wiley +1 more source
Evaluation of cavitation enhancements in low-boiling point (< -2°C) perfluorocarbon nanodroplet and microbubble mixtures using therapeutic ultrasound pulses. [PDF]
Ultrason SonochemKhan H, Dayton PA, Xu Z, Jiang X, Kim J.
europepmc +1 more source
Deep Underground Science and Engineering, EarlyView.In the process of water‐soluble cavern construction of salt cavern energy storage, since the interlayer does not dissolve in water easily, sudden collapse will cause engineering accidents such as bending and damage of the inner tube of the cavern.
Zenghui Zhao +5 more
wiley +1 more source
Sustainable design and durability of domestic micro combined heat and power scroll expander systems.
Research to understand the mechanisms of wear within the main components of three different micro-CHP scroll expander systems was conducted. This was performed in order to identify the possible tribo-mechanical effects (abrasion, adhesion, cavitation ...
Tzanakis, Iakovos
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Gyroid porous inserts as a novel flow control to mitigate tip vortex cavitation. [PDF]
Exp FluidsBerger T, Farhat M.
europepmc +1 more source
Defect‐Engineered SrTiO3‐x for Flexoelectric‐Dominated Catalysis
EcoEnergy, EarlyView.Defect‐engineered SrTiO3‐x nanoparticles with enhanced flexoelectricity efficiently degrade pollutants and produce hydrogen under ultrasound‐driven flexocatalysis. This materials–engineering approach offers a scalable pathway for combining environmental remediation and renewable energy applications. ABSTRACT Flexocatalysis provides an alternative route
Yu‐Chun Huang +16 more
wiley +1 more source
Analysis of radial oscillations of gas bubbles in Newtonian or viscoelastic mediums under acoustic excitation [PDF]
Acoustic cavitation plays an important role in a broad range of biomedical, chemical and oceanic engineering problems. For example, kidney stone can be crushed into the powder (being discharged naturally) by the acoustic cavitation generated by carefully
Zhang, Yuning (Researcher in engineering)
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