Date of Award

January 2016

Degree Type


Degree Name

Doctor of Philosophy (PhD)


Nuclear Engineering

First Advisor

Mamoru Ishii

Committee Member 1

Takashi Hibiki

Committee Member 2

Martin Bertodano

Committee Member 3

Gregory Blaisdell


Prior work has shown that a two-fluid model with a single set of constitutive relations is required to predict a wide range of two-phase flow conditions. The current work is a step in that direction. The 3-D three-field two-fluid model with a two-group Interfacial Area Transport Equation (IATE) has been selected as the required framework with the Computational Fluid Dynamics (CFD) code ANSYS-CFX. The objectives of this proposed work are the following: select a set of constitutive relations and implement these models into CFX; evaluate these models for a wide range of test conditions; if required, develop better models for the interfacial transfer mechanisms.