Turbulent Bubbly Flow

Irene Mazzitelli

Research output: ThesisPhD Thesis - Research UT, graduation UT

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Abstract

Turbulent bubbly flow is investigated by calculating and quantifying the motion and the action of microbubbles in homogeneous, isotropic and stationary turbulence. Direct numerical simulation is employed for the flow Navier-Stokes equations and Lagrangian tracking is used for computing the bubble trajectories. The forces acting on bubbles are fluid acceleration plus added mass effects, drag, lift and buoyancy. They are taken into account by a point-force model, which is reasonable for bubble Reynolds numbers of order 1, that correspond to microbubbles of diameter ~ 200µm in water (v ∼ 10−2cm2/s and g = 981cm/s2).).
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • University of Twente
Supervisors/Advisors
  • Lohse, Detlef, Supervisor
Award date25 Jun 2003
Place of PublicationEnschede
Publisher
Print ISBNs90-365-1924-1
DOIs
Publication statusPublished - 25 Jun 2003

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