Unsteady behaviour of bubble column in homogeneous flow regime: Startup and shutdown

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F23%3A00572103" target="_blank" >RIV/67985858:_____/23:00572103 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0342929" target="_blank" >https://hdl.handle.net/11104/0342929</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ces.2023.118806" target="_blank" >10.1016/j.ces.2023.118806</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unsteady behaviour of bubble column in homogeneous flow regime: Startup and shutdown

Popis výsledku v původním jazyce

The startup (engagement, EN) and shutdown (disengagement, DE) processes in the bubble column are investigated both experimentally and theoretically. Two horizontal interfaces, top and bottom, characterize the evolving bubble bed. Their motion is explored by measurements in a laboratory air–water bubble column operated in the homogeneous flow regime (HoR). The effect of two control parameters is determined: clear liquid height L and gas superficial velocity q. The following results are obtained: the trajectories of the top and bottom interfaces, the duration of the early and late stages of EN, the coordinate points of the typical events of the bubble bed dynamics, the bubble swarm velocities related to the interfaces, the characteristic time scales, the symmetry features of EN and DE processes, the parametric dependence on L and q. A simple mathematical model is suggested to describe and interpret the experimental data. n

Název v anglickém jazyce

Unsteady behaviour of bubble column in homogeneous flow regime: Startup and shutdown

Popis výsledku anglicky

The startup (engagement, EN) and shutdown (disengagement, DE) processes in the bubble column are investigated both experimentally and theoretically. Two horizontal interfaces, top and bottom, characterize the evolving bubble bed. Their motion is explored by measurements in a laboratory air–water bubble column operated in the homogeneous flow regime (HoR). The effect of two control parameters is determined: clear liquid height L and gas superficial velocity q. The following results are obtained: the trajectories of the top and bottom interfaces, the duration of the early and late stages of EN, the coordinate points of the typical events of the bubble bed dynamics, the bubble swarm velocities related to the interfaces, the characteristic time scales, the symmetry features of EN and DE processes, the parametric dependence on L and q. A simple mathematical model is suggested to describe and interpret the experimental data. n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA19-09518S" target="_blank" >GA19-09518S: Dynamika nestacionárních dějů v plyno-kapalinových soustavách</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

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

1873-4405

Svazek periodika

277

Číslo periodika v rámci svazku

AUG 5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

118806

Kód UT WoS článku

001008739100001

EID výsledku v databázi Scopus

2-s2.0-85159422926