Experiments on Breakup of Bubbles in a Turbulent Flow.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F18%3A00484188" target="_blank" >RIV/67985858:_____/18:00484188 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/aic.15935" target="_blank" >http://dx.doi.org/10.1002/aic.15935</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/aic.15935" target="_blank" >10.1002/aic.15935</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experiments on Breakup of Bubbles in a Turbulent Flow.

Popis výsledku v původním jazyce

The breakup of air bubbles in a turbulent water flow is studied experimentally. Water flows from a nozzle array, generating intense turbulence, and then flows downward through a cell. The velocity field is measured by PIV, and the local dissipation rate is estimated using a large-eddy PIV technique. Bubbles (1.8 to 5 mm) are injected in the bottom of the cell and rise toward the region of intense turbulence, where they break. The time spent by bubbles in various zones without breaking and the number of breakups are evaluated, providing information about the breakup frequency. The number of daughter bubbles and their size distribution are determined. The number of daughters depends on a Weber number 2ρε2/3D′5/3/σ, where ε is the turbulent energy dissipation rate, D′ is the mother particle size, ρ and σ are the liquid density and surface tension. The daughter size distribution is a function of their number.n

Název v anglickém jazyce

Experiments on Breakup of Bubbles in a Turbulent Flow.

Popis výsledku anglicky

The breakup of air bubbles in a turbulent water flow is studied experimentally. Water flows from a nozzle array, generating intense turbulence, and then flows downward through a cell. The velocity field is measured by PIV, and the local dissipation rate is estimated using a large-eddy PIV technique. Bubbles (1.8 to 5 mm) are injected in the bottom of the cell and rise toward the region of intense turbulence, where they break. The time spent by bubbles in various zones without breaking and the number of breakups are evaluated, providing information about the breakup frequency. The number of daughter bubbles and their size distribution are determined. The number of daughters depends on a Weber number 2ρε2/3D′5/3/σ, where ε is the turbulent energy dissipation rate, D′ is the mother particle size, ρ and σ are the liquid density and surface tension. The daughter size distribution is a function of their number.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/GA15-15467S" target="_blank" >GA15-15467S: Rozpad bublin v turbulentním proudění</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

AIChE Journal

ISSN

0001-1541

e-ISSN

—

Svazek periodika

64

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

740-757

Kód UT WoS článku

000419108000029

EID výsledku v databázi Scopus

2-s2.0-85028615872