1998 Volume 42 Pages 619-624
Characteristics of bottom boundary layer under solitary wave is investigated using Jones and Launder's original k-ε turbulence model. The effects of both molecular and turbulent viscosity are included in the present numerical analysis. Although available experimental data did not cover the full range of transitional and turbulent regimes, however, within the laminar region experimental data and exact solution shows very good agreement when compared with computed results. It is observed that flow parameters do not correspond to turbulent transition uniformly with same Reynolds number. The earliest transitional character is found in shear stress ratio of crest to trough. However, based on the friction factor diagram, Reynolds number around 2.16×105 could be identified as the critical to turbulent transition.
