Bubble size distribution resulting from the breakup of an air cavity injected into a turbulent water jet

Martínez Bazán, Carlos and Montañés García, José Luis and Lasheras, Juan C. (2000). Bubble size distribution resulting from the breakup of an air cavity injected into a turbulent water jet. "Physics of Fluids", v. 12 (n. 1); pp. 145-148. ISSN 1070-6631. https://doi.org/10.1063/1.870290.

Description

Title: Bubble size distribution resulting from the breakup of an air cavity injected into a turbulent water jet
Author/s:
  • Martínez Bazán, Carlos
  • Montañés García, José Luis
  • Lasheras, Juan C.
Item Type: Article
Título de Revista/Publicación: Physics of Fluids
Date: 2000
ISSN: 1070-6631
Volume: 12
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We investigated experimentally the shape of the final size PDF(D) resulting from the breakup of an air bubble injected into the fully developed region of a high Reynolds number turbulent water jet. It is shown that the PDF(Dcirc) of the normalized bubble size Dcirc=D/D32, where D32 is the Sauter mean diameter of the distribution, has a universal single shape independent of the value of the turbulent kinetic energy of the water jet at the bubble injection point and of the air void fraction, α. The shape of the exponential tails characterizing each PDF(D) is shown to be only a function of the initial bubble size D0 and the critical bubble size Dc, defined as Dc=(1.46σ/ρ)3/5ɛ-2/5, where ɛ is the value of the dissipation rate of turbulent kinetic energy per unit mass at the air injection point.

More information

Item ID: 5931
DC Identifier: http://oa.upm.es/5931/
OAI Identifier: oai:oa.upm.es:5931
DOI: 10.1063/1.870290
Official URL: http://www.aip.org/
Deposited by: Memoria de Investigacion 2
Deposited on: 08 Feb 2011 17:20
Last Modified: 20 Apr 2016 14:36
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