Mechanisms of fluidic microbubble generation Part II: Suppressing the conjunctions

0432125 - ÚT 2015 RIV GB eng J - Článek v odborném periodiku
Tesař, Václav
Mechanisms of fluidic microbubble generation Part II: Suppressing the conjunctions.
Chemical Engineering Science. Roč. 116, č. 6 (2014), s. 849-856. ISSN 0009-2509. E-ISSN 1873-4405
Grant CEP: GA ČR GA13-23046S
Institucionální podpora: RVO:61388998
Klíčová slova: bubble coalescence * bubble conjunction * fluidic oscillator
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 2.337, rok: 2014
http://dx.doi.org/10.1016/j.ces.2014.06.006

In the first part of this paper was demonstrated that microbubbles, because of their low ascent velocity, grow in size by repeated mutual conjunctions at exit of the aerator in which they are formed. This may be avoided by action of a fluidic oscillator in the gas supply – the mechanism of the action, however, remained so far unknown. High-speed camera records show that the oscillation causes periodic sucking into and expelling out of the water from the aerator channel moving along also the newly generated microbubble. This return prevents it from conjunction with the previously generated microbubbles.
Trvalý link: http://hdl.handle.net/11104/0237373