Modeling and Simulation of Bubbles and Particles

Finally, the new equation of motion was applied to air bubbles and sand particles of several different diameters. Particle-fluid interactions observed through flow-visualization, particle concentration, particle-wall interactions, and Lagrangian statistics were all considered. These results were interpreted and compared to heavy-particle results where appropriate. Particle deposition was found to be well-described by the heavy-particle model of Young & Leeming and root-mean-square relative velocities were found to also agree with previous heavy-particle work. A model for the latter is suggested for heavy-particles and found to work similarly well for low-density particles. Non-tracer behavior was observed for bubbles with small Stokes numbers, a result not expected based on heavy-particle expectations. Local clustering of particles was observed in certain fluid structures which may indicate the importance of modeling particle collisions in future studies.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Aerospace Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Dorgan, Andrew James

Contributors dc:contributor

• Loth, Eric

• Engineering, Mechanical

Language dc:language

eng

Identifier

(MiAaPQ)AAI3362773

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/85113