Dynamics of bubble formation in cylindrical and planar geometries

  1. Bolaños Jiménez, Rocio
Supervised by:
  1. Alejandro Sevilla Santiago Director
  2. Carlos Martínez Bazán Director

Defence university: Universidad de Jaén

Fecha de defensa: 04 March 2011

Committee:
  1. Norman Riley Chair
  2. Enrique Sanmiguel Rojas Secretary
  3. Antonio Lozano Fantoba Committee member
  4. Francisco Javier Rodríguez Rodríguez Committee member
  5. José Manuel Gordillo Arias de Saavedra Committee member
Department:
  1. INGENIERÍA MECÁNICA Y MINERA

Type: Thesis

Teseo: 310252 DIALNET lock_openRUJA editor

Abstract

The formation and subsequent collapse of a bubble constitute a rich and beauti- ful physical phenomenon which, despite its importance, is still full of surprises. A deep understanding of this problem is required for an optimum design of industrial equipments used to generate bubbles to ensure a more efficient use of energy. There- fore, the purpose of this Thesis is to improve our knowledge about the classical, but still not completely understood, problem of formation of bubbles from submerged nozzles in stagnant liquids. In particular, we focus on the dynamics of the final instants previous to pinch-off. In addition, bubble formation in co-flowing air-water configuration with an innovative planar geometry is studied, which could represent an alternative system to produce bubbles in a massive way.