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Original title:
Model for a Fluid-Particle Breakup in a Turbulent Flow.
Authors: Zedníková, Mária ; Vejražka, Jiří ; Stanovský, Petr
Document type: Papers
Conference/Event: Topical Problem of Fluid Mechanics 2017, Prague (CZ), 20170215
Year: 2017
Language: eng
Abstract: A model is developed for predicting the outcome of breakup of a fluid particle (bubble or drop), which is initially deformed (e.g. due to turbulence) and breaks into two daughter particles. An initially dumbbell-shaped deformation of the particle is assumed. The evolution of sizes of particle sub-parts is calculated using Rayleigh-Plesset equations, which consider the inertia of surrounding fluid, capillary action and viscous effects. The redistribution of internal fluid in the particle is calculated using Bernoulli equation. The model computes the sizes of daughter particles after the breakup. By assuming various initial conditions (various initial shapes and initial velocities of deformation), the size distribution of daughter particles is obtained. These size distributions are qualitatively compared with available experimental data and reasonable agreement is observed. Because of strong assumptions, this model cannot be used directly for accurate prediction of size distribution after a breakup. However, it provides an insight in the physics of the breakup, especially on the effect of inner phase properties.
Keywords: bubble breakup; drop breakup; particle size distribution
Project no.: GA15-15467S (CEP)
Funding provider: GA ČR
Host item entry: Topical Problems of Fluid Mechanics, ISBN 978-80-87012-61-1, ISSN 2336-5781
Note: Související webová stránka: http://hdl.handle.net/11104/0269469
Rights: This work is protected under the Copyright Act No. 121/2000 Coll.
Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Original record: http://hdl.handle.net/11104/0269469
Permalink: http://www.nusl.cz/ntk/nusl-263469
The record appears in these collections:
Research > Institutes ASCR > Institute of Chemical Process Fundamentals
Conference materials > Papers
Authors: Zedníková, Mária ; Vejražka, Jiří ; Stanovský, Petr
Document type: Papers
Conference/Event: Topical Problem of Fluid Mechanics 2017, Prague (CZ), 20170215
Year: 2017
Language: eng
Abstract: A model is developed for predicting the outcome of breakup of a fluid particle (bubble or drop), which is initially deformed (e.g. due to turbulence) and breaks into two daughter particles. An initially dumbbell-shaped deformation of the particle is assumed. The evolution of sizes of particle sub-parts is calculated using Rayleigh-Plesset equations, which consider the inertia of surrounding fluid, capillary action and viscous effects. The redistribution of internal fluid in the particle is calculated using Bernoulli equation. The model computes the sizes of daughter particles after the breakup. By assuming various initial conditions (various initial shapes and initial velocities of deformation), the size distribution of daughter particles is obtained. These size distributions are qualitatively compared with available experimental data and reasonable agreement is observed. Because of strong assumptions, this model cannot be used directly for accurate prediction of size distribution after a breakup. However, it provides an insight in the physics of the breakup, especially on the effect of inner phase properties.
Keywords: bubble breakup; drop breakup; particle size distribution
Project no.: GA15-15467S (CEP)
Funding provider: GA ČR
Host item entry: Topical Problems of Fluid Mechanics, ISBN 978-80-87012-61-1, ISSN 2336-5781
Note: Související webová stránka: http://hdl.handle.net/11104/0269469
Rights: This work is protected under the Copyright Act No. 121/2000 Coll.
Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Original record: http://hdl.handle.net/11104/0269469
Permalink: http://www.nusl.cz/ntk/nusl-263469
The record appears in these collections:
Research > Institutes ASCR > Institute of Chemical Process Fundamentals
Conference materials > Papers
Record created 2017-03-10, last modified 2023-12-11
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