Microbubbles: Properties, Mechanisms of Their Generation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00476911" target="_blank" >RIV/61388998:_____/17:00476911 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-3-319-60282-0_8" target="_blank" >http://dx.doi.org/10.1007/978-3-319-60282-0_8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-319-60282-0_8" target="_blank" >10.1007/978-3-319-60282-0_8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microbubbles: Properties, Mechanisms of Their Generation

Popis výsledku v původním jazyce

This chapter discusses microbubbles—small gas bubbles in liquid medium of diameter less than 1 mm. Although they were known to offer a number of advantages, until recently they could be generate only by energetically inefficient methods. New horizons became open by the discovery of generation by aerators provided with an oscillator in their gas supply. Chapter provides in particular an information about no-moving-part fluidic oscillators, recently already almost forgotten but now demonstrated to offer benefits like low manufacturing cost, reliability, long life and absence of maintenance. The empirical fact that small bubbles cannot be obtained simply by making small passages in the aerator is here explained by conjunction of several microbubbles. Because the velocity of bubble motion decreases with decreasing size, small microbubbles tend to dwell near the aerator exits. They then coalesce there into a much larger bubble (the trend supported by the latter possessing lower surface energy). The fact that the oscillator prevents this conjunction and thus keeps the microbubbles small has been explained by high-speed camera images which show the effect of oscillatory motions.

Název v anglickém jazyce

Microbubbles: Properties, Mechanisms of Their Generation

Popis výsledku anglicky

This chapter discusses microbubbles—small gas bubbles in liquid medium of diameter less than 1 mm. Although they were known to offer a number of advantages, until recently they could be generate only by energetically inefficient methods. New horizons became open by the discovery of generation by aerators provided with an oscillator in their gas supply. Chapter provides in particular an information about no-moving-part fluidic oscillators, recently already almost forgotten but now demonstrated to offer benefits like low manufacturing cost, reliability, long life and absence of maintenance. The empirical fact that small bubbles cannot be obtained simply by making small passages in the aerator is here explained by conjunction of several microbubbles. Because the velocity of bubble motion decreases with decreasing size, small microbubbles tend to dwell near the aerator exits. They then coalesce there into a much larger bubble (the trend supported by the latter possessing lower surface energy). The fact that the oscillator prevents this conjunction and thus keeps the microbubbles small has been explained by high-speed camera images which show the effect of oscillatory motions.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA13-23046S" target="_blank" >GA13-23046S: FLUIDICKÉ OSCILÁTORY PRO PĚSTOVÁNÍ ŘAS</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Particles in Flows

ISBN

978-3-319-60281-3

Počet stran výsledku

26

Strana od-do

453-519

Počet stran knihy

519

Název nakladatele

Birkhäuser Basel

Místo vydání

Basel

Kód UT WoS kapitoly

—