Journal ArticleDOI
Dynamics of bubble growth and detachment in a viscous shear flow
Géraldine Duhar,Catherine Colin +1 more
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In this article, the quasistatic injection of air bubbles at the wall in a viscous shear flow is experimentally investigated by high-speed video pictures and image processing.Abstract:
The quasistatic injection of air bubbles at the wall in a viscous shear flow is experimentally investigated by high-speed video pictures and image processing. The bubble radius and center of gravity position are determined throughout the growth. Experimental results are then used to validate a force balance model during bubble growth and after detachment for small bubble Reynolds numbers. The contact angles at the bubble foot calculated from the force balance agree well with those experimentally obtained from image processing. Finally, the force balance model is used to predict the departure bubble radius versus the gas flow rate and liquid flow shear rate.read more
Citations
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Journal ArticleDOI
Influence of surface tension implementation in Volume of Fluid and coupled Volume of Fluid with Level Set methods for bubble growth and detachment
TL;DR: In this paper, a simple coupled Volume of Fluid (VOF) with Level Set (LS) method was proposed and tested by comparison against a standard VOF solver and experimental observations.
Journal ArticleDOI
Influence of Bubbles on the Energy Conversion Efficiency of Electrochemical Reactors
Andrea Angulo,Peter van der Linde,Han J. G. E. Gardeniers,Miguel A. Modestino,David Fernandez Rivas +4 more
TL;DR: In this paper, a review of the current knowledge on the effects of bubbles on electrochemical systems with the aim to identify opportunities and motivate future research in this area is presented. But, we lack a detailed understanding on the intricate dependencies between bubble evolution processes and electrochemical phenomena.
Journal ArticleDOI
Influence of Bubbles on the Energy Conversion Efficiency of Electrochemical Reactors
Andrea Angulo,Peter van der Linde,Han J. G. E. Gardeniers,Miguel A. Modestino,David Fernandez Rivas +4 more
TL;DR: In this article, a review of the current knowledge on the effects of bubbles on electrochemical systems with the aim to identify opportunities and motivate future research in this area is presented. But, we lack a detailed understanding on the intricate dependencies between bubble evolution processes and electrochemical phenomena.
Journal ArticleDOI
Experimental study of gas injected bubble growth from submerged orifices
TL;DR: In this article, the authors investigated the mechanism of adiabatic gas bubble growth from submerged orifices with the view of elucidating the interdependence of the bubble shape and the pressure field during growth and departure.
Journal ArticleDOI
Self-Powered Triboelectric Micro Liquid/Gas Flow Sensor for Microfluidics.
Jie Chen,Hengyu Guo,Hengyu Guo,Jiangeng Zheng,Yingzhou Huang,Guanlin Liu,Chenguo Hu,Zhong Lin Wang +7 more
TL;DR: By demonstrating the monitoring of the transfusion process for a patient and the gas flow produced from an injector, it shows that TMS has a great potential in building a self-powered micro total analysis system.
References
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Journal ArticleDOI
Dynamics of bubble growth and detachment from a needle
Hasan N. Oguz,Andrea Prosperetti +1 more
TL;DR: In this article, the authors considered the growth and departure of bubbles from a submerged needle and showed the existence of two different growth regimes according to whether the gas flow rate into the bubble is smaller or greater than a critical value.
Journal ArticleDOI
Vapor bubble departure in forced convection boiling
TL;DR: In this paper, a forced convection boiling facility has been fabricated in which vapor bubble departure can be investigated, and a detailed analysis of various forces acting on the bubble is presented and is used to predict the mean departure diameter.
Book ChapterDOI
The Formation of Bubbles and Drops
R. Kumar,N.K. Kuloor +1 more
TL;DR: In this paper, the authors describe the single bubble formation at isolated nozzles both under constant flow and constant pressure conditions, though considerable work still needs to be done in the intermediate region where bubble size is highly influenced by resonance effects.
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Transport phenomena with drops and bubbles
TL;DR: In this article, the authors define fundamental principles and definitions of physics, including Shape and Size of Fluid Particles, Shapes of Static Particles in Motion, and Drop Size Distribution.
Journal ArticleDOI
Bubble formation at an orifice in a viscous liquid
John F. Davidson,B.O.G. Schüler +1 more
TL;DR: In this paper, a theory of bubble formation based on the motion of a bubble in a viscous liquid has been developed, which gives the volume of gas bubbles formed at an orifice in a fluid for both constant gas flow and constant gas pressure.