Bubble Coalescence: Effect of Bubble Approach Velocity and Liquid Viscosity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F15%3A00444323" target="_blank" >RIV/67985858:_____/15:00444323 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ces.2015.04.053" target="_blank" >http://dx.doi.org/10.1016/j.ces.2015.04.053</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ces.2015.04.053" target="_blank" >10.1016/j.ces.2015.04.053</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bubble Coalescence: Effect of Bubble Approach Velocity and Liquid Viscosity

Popis výsledku v původním jazyce

The goal of this study is to present new experimental data on the effect of the bubble approach velocity and liquid viscosity on pairwise bubble coalescence. Measurements were performed to investigate the dynamics of bubble coalescence under well-definedlaboratory conditions. Air and pure aqueous solutions of alginate (no surfactants) were the phases. The bubbles were formed from two vertical capillaries, under constant flow conditions. The coalescence process was recorded with a fast video and then image analysed, to evaluate the bubble growth, bubble expansion rate, the first bubble touch, bubble contact time T, bubble coalescence efficiency E. Three control parameters were tested. The bubble size D on contact was set by the spacing between the capillaries (D = 1 and 1.5 mm). The bubble approach velocity V was controlled by the gas input (V = 0.031 - 39 mm/s). The liquid viscosity ? was adjusted by the alginate content (? = 1.2 - 10.3 mPa.s).

Název v anglickém jazyce

Bubble Coalescence: Effect of Bubble Approach Velocity and Liquid Viscosity

Popis výsledku anglicky

The goal of this study is to present new experimental data on the effect of the bubble approach velocity and liquid viscosity on pairwise bubble coalescence. Measurements were performed to investigate the dynamics of bubble coalescence under well-definedlaboratory conditions. Air and pure aqueous solutions of alginate (no surfactants) were the phases. The bubbles were formed from two vertical capillaries, under constant flow conditions. The coalescence process was recorded with a fast video and then image analysed, to evaluate the bubble growth, bubble expansion rate, the first bubble touch, bubble contact time T, bubble coalescence efficiency E. Three control parameters were tested. The bubble size D on contact was set by the spacing between the capillaries (D = 1 and 1.5 mm). The bubble approach velocity V was controlled by the gas input (V = 0.031 - 39 mm/s). The liquid viscosity ? was adjusted by the alginate content (? = 1.2 - 10.3 mPa.s).

Druh

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

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

—

Projekt

<a href="/cs/project/LD13018" target="_blank" >LD13018: Vlastnosti fázového rozhraní - jejich měření a jejich vliv na chování makroskopických toků</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Science

ISSN

0009-2509

e-ISSN

—

Svazek periodika

134

Číslo periodika v rámci svazku

SEP 29

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

205-216

Kód UT WoS článku

000359029200019

EID výsledku v databázi Scopus

—