Turbulence in Multiphase Models for Aeration Bubble Plumes

"A new theoretical formulation for bubble plumes is presented, which serves for the definition of a sophisticated three-dimensional (3D) numerical model. The theoretical/numerical model includes a treatment of turbulence via a k - epsilon model and a Large-Eddy Simulation (LES) approach. It is based on a double averaging procedure that accounts for: (a) the presence of a two-phase flow, and (b) its turbulent nature. The model also allows for the global simulation of phenomena of break-up and coalescence. This theory is employed in the derivation and justification of existing one-dimensional (1D), ""integral"" models. The approximations involved are clearly explicited and quantified. In this framework, 1D models appear for the first time as a special case of this broader theory. This fact is finally used in extending existing 1D models, now including turbulence and phenomena of break-up and coalescence. (Abstract shortened by UMI.)."

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil and Environmental Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Bombardelli, Fabian Alejandro

Contributors dc:contributor

• Garcia, Marcelo H.

• Applied Mechanics

Language dc:language

eng

Identifier

(MiAaPQ)AAI3130883

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/83227