A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Resistance to Reversing Flows Over Movable Beds
Configuration of a movable bed changes periodically as the velocity of the reversing flow over it varies in time. Experiments are carried out with bed materials of various densities. It is seen that the ripples generated on the bed surface are essentially similar to those of unidirectional flow, but their shapes are reversed as to conform with the flow direction. The resistance of such a bed depends on grain Froude number and grain Reynolds number. The importance of viscosity in determining the resistance is emphasized. The resistance function at the instant of peak velocity is determined for the conditions of movable-bed tidal models. Ripple friction factor is found not to depend on the depth and the period of the flow in the ranges used in the experiments. Relationships determining the resistance of a movable bed for tidal model conditions are presented.
Resistance to Reversing Flows Over Movable Beds
Configuration of a movable bed changes periodically as the velocity of the reversing flow over it varies in time. Experiments are carried out with bed materials of various densities. It is seen that the ripples generated on the bed surface are essentially similar to those of unidirectional flow, but their shapes are reversed as to conform with the flow direction. The resistance of such a bed depends on grain Froude number and grain Reynolds number. The importance of viscosity in determining the resistance is emphasized. The resistance function at the instant of peak velocity is determined for the conditions of movable-bed tidal models. Ripple friction factor is found not to depend on the depth and the period of the flow in the ranges used in the experiments. Relationships determining the resistance of a movable bed for tidal model conditions are presented.
Resistance to Reversing Flows Over Movable Beds
Bayazit, Mehmetcik (author)
Journal of the Hydraulics Division ; 95 ; 1109-1128
2021-01-01
201969-01-01 pages
Article (Journal)
Electronic Resource
Unknown
Resistance to reversing flows over movable beds
| Engineering Index Backfile | 1969
Laboratory Investigation of Unsteady Flows over Fixed and Movable Beds
| British Library Conference Proceedings | 2004
Applicability of Sediment Transport Capacity Formulas to Dam-Break Flows over Movable Beds
| British Library Online Contents | 2011
Applicability of Sediment Transport Capacity Formulas to Dam-Break Flows over Movable Beds
| Online Contents | 2011
Three-Dimensional Numerical Modeling of Dam-Break Flows with Sediment Transport over Movable Beds
| Online Contents | 2015