Date of Graduation


Document Type


Degree Type



Statler College of Engineering and Mineral Resources


Mechanical and Aerospace Engineering

Committee Chair

Ismail Celik.


Numerical simulations were performed involving stratified, shear flows that have been investigated experimentally. One set of simulations dealt with a homogeneous shear flow involving miscible fluids. The other set of simulations dealt with a developing shear layer involving immiscible fluids. The re-fueling of a compensated fuel/ballast tank, which is partially characterized by a shear layer, was also simulated. In all the simulations a single fluid, scalar transport multiphase model and the k-epsilon turbulence model were used. In the simulations involving miscible fluids an interfacial thickness relationship given by delta/H∼(Ri*)--2.1 and an entrainment relationship given by E∼(Ri*)--1.1 were predicted. These relationships agree with experimental observations. Results from the simulations involving immiscible fluids show a strong gradient Richardson number dependence where the gradient Richardson number ranged from Ri G = 0.05 to RiG = 0.25. The simulations of the compensated fuel/ballast tank showed that buoyant flow events around internal manholes caused a significant amount of mixing.