Three-phase contact line expansion during air bubble attachment to hydrophobic solid surface - experiment and modeling

Kód výsledku v IS VaVaI

RIV/60461373:22340/18:43916856 - isvavai.cz

Výsledek na webu

http://www.journalssystem.com/ppmp/Three-phase-contact-line-expansion-during-air-bubble-attachment-to-hydrophobic-solid,91545,0,2.html

DOI - Digital Object Identifier

10.5277/ppmp18138

Jazyk výsledku

angličtina

Název v původním jazyce

Three-phase contact line expansion during air bubble attachment to hydrophobic solid surface - experiment and modeling

Popis výsledku v původním jazyce

Kinetics of spreading of the three-phase contact hole (dewetting) formed by an air bubble colliding with hydrophobic solid surface, after rupture of intervening liquid film, was studied both experimentally and numerically. During experiments it was found that evolution of the TPC line diameter with time occurs with characteristic S-shaped trend which, in consequence, causing rather unexpected maxima at the TPC line spreading velocity curves. It was determined that position of this maximum appears after 1-2 ms after TPC hole formation and its position (in respect to time) depends on the bubble diameter. In solution of surface-active substance this maximum was much smoother and longer. By means of complementary numerical calculations the source of maxima existence and differences in their position and shapes were explained. It was concluded that this effect has only hydrodynamic origin, caused by different course of bubble shape pulsations during TPC line formation and spreading, which depends on degree of liquid/gas interface immobilization (fluidity retardation). © Wroclaw University of Science and Technology.

Název v anglickém jazyce

Three-phase contact line expansion during air bubble attachment to hydrophobic solid surface - experiment and modeling

Popis výsledku anglicky

Kinetics of spreading of the three-phase contact hole (dewetting) formed by an air bubble colliding with hydrophobic solid surface, after rupture of intervening liquid film, was studied both experimentally and numerically. During experiments it was found that evolution of the TPC line diameter with time occurs with characteristic S-shaped trend which, in consequence, causing rather unexpected maxima at the TPC line spreading velocity curves. It was determined that position of this maximum appears after 1-2 ms after TPC hole formation and its position (in respect to time) depends on the bubble diameter. In solution of surface-active substance this maximum was much smoother and longer. By means of complementary numerical calculations the source of maxima existence and differences in their position and shapes were explained. It was concluded that this effect has only hydrodynamic origin, caused by different course of bubble shape pulsations during TPC line formation and spreading, which depends on degree of liquid/gas interface immobilization (fluidity retardation). © Wroclaw University of Science and Technology.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Physicochemical Problems of Mineral Processing

ISSN

1643-1049

e-ISSN

—

Svazek periodika

54

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

12

Strana od-do

1095-1106

Kód UT WoS článku

000450237100007

EID výsledku v databázi Scopus

2-s2.0-85057107508