Turbulent Bubbly Flow

Irene Mazzitelli

doi:10.3990/1.978-90-365-1924-3

Turbulent Bubbly Flow

Irene Mazzitelli

Physics of Fluids

Research output: Thesis › PhD 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 language	English
Qualification	Doctor of Philosophy
Awarding Institution	University of Twente
Supervisors/Advisors	Lohse, Detlef, Supervisor
Award date	25 Jun 2003
Place of Publication	Enschede
Publisher	Twente University Press (TUP)
Print ISBNs	90-365-1924-1
DOIs	https://doi.org/10.3990/1.978-90-365-1924-3
Publication status	Published - 25 Jun 2003

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PhD thesis I. MazzitelliFinal published version, 1.38 MB

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title = "Turbulent Bubbly Flow",

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).).",

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U2 - 10.3990/1.978-90-365-1924-3

DO - 10.3990/1.978-90-365-1924-3

M3 - PhD Thesis - Research UT, graduation UT

SN - 90-365-1924-1

PB - Twente University Press (TUP)

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Turbulent Bubbly Flow

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