Impact of Saltation on the Modeling of Heat Transfer for High Reynolds Number Particle-Laden Flows
Open Access
Author:
Vickerson, Zachary
Graduate Program:
Mechanical Engineering
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
November 30, 2021
Committee Members:
Mary Frecker, Program Head/Chair Robert Francis Kunz, Thesis Advisor/Co-Advisor Mike Manahan, Jr., Committee Member
Keywords:
multiphase flow heat transfer particle transport computational fluid dynamics
Abstract:
The heat transfer performance of a particle-laden flow has design implications for a wide range of industries. The objective of this thesis is to improve a previously proposed Eulerian CFD model for the heat transfer of a highly mass loaded high Reynolds number particle-laden flow. Experimentation had shown that a layer of copper particles accumulated on the bottom of the flow channel. The previous two field (gas + dispersed particle) model was extended to include a third field to represent this particle layer. Mass transfer models were developed to account for the deposition of particles from dispersed to particle layer and from particle layer back to dispersed. New drag and heat transfer models were developed to account for the interaction of the particle layer field with the core gas flow. The model is tested and implemented using NPHASE, an Eulerian Multiphase flow CFD solver, and suggestions for improvement are proposed.
