Model for a Fluid-Particle Breakup in a Turbulent Flow.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F17%3A00472122" target="_blank" >RIV/67985858:_____/17:00472122 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0269469" target="_blank" >http://hdl.handle.net/11104/0269469</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/TPFM.2017.042" target="_blank" >10.14311/TPFM.2017.042</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Model for a Fluid-Particle Breakup in a Turbulent Flow.

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Model for a Fluid-Particle Breakup in a Turbulent Flow.

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA15-15467S" target="_blank" >GA15-15467S: Rozpad bublin v turbulentním proudění</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Topical Problems of Fluid Mechanics

ISBN

978-80-87012-61-1

ISSN

2336-5781

e-ISSN

—

Počet stran výsledku

6

Strana od-do

337-342

Název nakladatele

Institute of Thermodynamics AS CR, v. v. i.

Místo vydání

Prague

Místo konání akce

Prague

Datum konání akce

15. 2. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000404424300042