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Wall Similarity in Turbulent Open-Channel Flow
Publisher: American Society of Civil Engineers
Abstract: The present work demonstrates that the assumption of wall similarity in the equilibrium region of open channels leads to the definition of a constant, universal value for the normalized vertical flux of turbulent kinetic ...
Mean Flow and Turbulence Structure of Open-Channel Flow through Non-Emergent Vegetation
Publisher: American Society of Civil Engineers
Abstract: The ability of turbulence models, based on two equation closure schemes (the k-ε and the k-ω formulations) to compute the mean flow and turbulence structure in open channels with rigid, nonemergent vegetation is analyzed. ...
Risk of Sediment Erosion and Suspension in Turbulent Flows
Publisher: American Society of Civil Engineers
Abstract: It is shown how some basic probability tools may help in the characterization of the turbulent processes involved in the mechanics of sediment transport. Both the initiation of sediment motion and the threshold for sediment ...
Unsteady Bed Shear Stresses Induced by Navigation: Laboratory Observations
Publisher: American Society of Civil Engineers
Abstract: Time-dependent bed shear stresses induced by the passage of a barge tow have been measured with hot film shear stress sensors in a 1:25 scale model. Conditions typical of those observed for Upper Mississippi River navigation ...