This thesis examines turbulent diffusion processes in rectangular and compound open
channels, with particular attention to the effect of secondary flow and the relationship
between eddy viscosity and eddy diffusivity. Three dimensional velocities and
concentration were measured using 3 component Laser Doppler Velocimetry (LDV)
combined with Laser Induced Fluorescence (LIF) from three laboratory flumes: one
rectangular simple channel and a deep and a shallow compound channel. (Continues...).
A Doctoral Thesis. Submitted in partial fulfillment of the requirements for the award of Doctor of Philosophy of Loughborough University.