Modeling of the influence of matrix elasticity on coalescence probability of colliding droplets in shear flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F12%3A00379765" target="_blank" >RIV/61389013:_____/12:00379765 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1122/1.4739930" target="_blank" >http://dx.doi.org/10.1122/1.4739930</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1122/1.4739930" target="_blank" >10.1122/1.4739930</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modeling of the influence of matrix elasticity on coalescence probability of colliding droplets in shear flow

Popis výsledku v původním jazyce

The theory of shear-flow-induced coalescence of monodisperse Newtonian droplets in Newtonian and viscoelastic (described by the Maxwell model) matrices has been derived. Changes in flattening of droplets during coalescence are considered. Calculated dependences on the system parameters of probability, Pc, that the droplet collision is followed by their fusion for Newtonian systems agree qualitatively with the Rother?Davis theory [Phys. Fluids 13, 1178?1190, (2001)]. Values of Pc for a certain set of parameters are substantially affected by the model used to describe mobility of the interface. It has been found that increasing elasticity (relaxation time) of the matrix leads to decreasing Pc irrespective of mobility of the interface. This decrease is small for short relaxation times but pronounced for long relaxation times. The shapes of the dependences of Pc on the droplet radii and the shear rate are similar for systems with a Newtonian matrix but differ qualitatively for systems with

Název v anglickém jazyce

Modeling of the influence of matrix elasticity on coalescence probability of colliding droplets in shear flow

Popis výsledku anglicky

The theory of shear-flow-induced coalescence of monodisperse Newtonian droplets in Newtonian and viscoelastic (described by the Maxwell model) matrices has been derived. Changes in flattening of droplets during coalescence are considered. Calculated dependences on the system parameters of probability, Pc, that the droplet collision is followed by their fusion for Newtonian systems agree qualitatively with the Rother?Davis theory [Phys. Fluids 13, 1178?1190, (2001)]. Values of Pc for a certain set of parameters are substantially affected by the model used to describe mobility of the interface. It has been found that increasing elasticity (relaxation time) of the matrix leads to decreasing Pc irrespective of mobility of the interface. This decrease is small for short relaxation times but pronounced for long relaxation times. The shapes of the dependences of Pc on the droplet radii and the shear rate are similar for systems with a Newtonian matrix but differ qualitatively for systems with

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/GAP106%2F11%2F1069" target="_blank" >GAP106/11/1069: Rozpad a koalescence kapek v tekoucích směsích nemísitelných polymerů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of Rheology

ISSN

0148-6055

e-ISSN

—

Svazek periodika

56

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

1393-1411

Kód UT WoS článku

000309387600005

EID výsledku v databázi Scopus

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