Recent results and persisting problems in modeling flow induced coalescence

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F14%3A00428566" target="_blank" >RIV/61389013:_____/14:00428566 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4873862" target="_blank" >http://dx.doi.org/10.1063/1.4873862</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4873862" target="_blank" >10.1063/1.4873862</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Recent results and persisting problems in modeling flow induced coalescence

Popis výsledku v původním jazyce

The contribution summarizes recent results of description of the flow induced coalescence in immiscible polymer blends and addresses problems that call for which solving. The theory of coalescence based on the switch between equations for matrix drainagebetween spherical or deformed droplets provides a good agreement with more complicated modeling and available experimental data for probability, Pc, that the collision of droplets will be followed by their fusion. A new equation for description of the matrix drainage between deformed droplets, applicable to the whole range of viscosity ratios, p, of the droplets and matrixes, is proposed. The theory facilitates to consider the effect of the matrix elasticity on coalescence. Pc decreases with the matrixrelaxation time but this decrease is not pronounced for relaxation times typical of most commercial polymers. Modeling of the flow induced coalescence in concentrated systems is needed for prediction of the dependence of coalescence rate

Název v anglickém jazyce

Recent results and persisting problems in modeling flow induced coalescence

Popis výsledku anglicky

The contribution summarizes recent results of description of the flow induced coalescence in immiscible polymer blends and addresses problems that call for which solving. The theory of coalescence based on the switch between equations for matrix drainagebetween spherical or deformed droplets provides a good agreement with more complicated modeling and available experimental data for probability, Pc, that the collision of droplets will be followed by their fusion. A new equation for description of the matrix drainage between deformed droplets, applicable to the whole range of viscosity ratios, p, of the droplets and matrixes, is proposed. The theory facilitates to consider the effect of the matrix elasticity on coalescence. Pc decreases with the matrixrelaxation time but this decrease is not pronounced for relaxation times typical of most commercial polymers. Modeling of the flow induced coalescence in concentrated systems is needed for prediction of the dependence of coalescence rate

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

—

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

AIP Conference Proceedings

ISBN

—

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

4

Strana od-do

"Roč. 1593"

Název nakladatele

American Institute of Physics

Místo vydání

Melville

Místo konání akce

Nuremberg

Datum konání akce

15. 7. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000341414900138