36 citations · 73 across the 8 of their papers we have counts for
8 papers · 1 filter
A predictive model for bubble-particle collisions in turbulence
Timothy T. K. Chan, Linfeng Jiang, Dominik Krug
The modelling of bubble-particle collisions is crucial to improving the efficiency of industrial processes such as froth flotation. Although such systems usually have turbulent flo…
To jump or not to jump: Adhesion and viscous dissipation dictate the detachment of coalescing wall-attached bubbles
Çayan Demirkır, Rui Yang, Aleksandr Bashkatov +3
Bubble coalescence can promote bubble departure at much smaller sizes compared to buoyancy. This can critically enhance the efficiency of gas-evolving electrochemical processes, su…
The effect of gravity on bubble-particle collisions in turbulence
Timothy T. K. Chan, Linfeng Jiang, Dominik Krug
Bubble-particle collisions in turbulence are key to the froth flotation process that is widely employed industrially to separate hydrophobic from hydrophilic materials. In our prev…
Electrolyte spraying within H bubbles during water electrolysis
Aleksandr Bashkatov, Florian Bürkle, Çayan Demirkır +10
Electrolytically generated gas bubbles can significantly hamper the overall electrolysis efficiency. Therefore it is crucial to understand their dynamics in order to optimise water…
How turbulence increases the bubble-particle collision rate
Linfeng Jiang, Dominik Krug
We study the effect of turbulence on collisions between a finite-size bubble and small inertial particles based on interface-resolved simulations. Our results show that the interac…
Life beyond Fritz: On the detachment of electrolytic bubbles
Çayan Demirkır, Jeffery A. Wood, Detlef Lohse +1
We present an experimental study on detachment characteristics of hydrogen bubbles during electrolysis. Using a transparent (Pt or Ni) electrode enables us to directly observe the…
Performance enhancement of electrocatalytic hydrogen evolution through coalescence-induced bubble dynamics
Aleksandr Bashkatov, Sunghak Park, Çayan Demirkır +4
The evolution of electrogenerated gas bubbles during water electrolysis can significantly hamper the overall process efficiency. Promoting the departure of electrochemically genera…
Mass transport at gas-evolving electrodes
Farzan Sepahi, Roberto Verzicco, Detlef Lohse +1
Direct numerical simulations are utilised to investigate mass transfer processes at gas-evolving electrodes that experience successive formation and detachment of bubbles. The gas-…