Oblique Impingement of Plane Turbulent Jets
Wall pressure and shear stress in the impingement region are studied experimentally and semi-empirical methods for their prediction are developed. The solutions of the corresponding potential...

Flow in Corrugated Pipes
The detailed measurement and analysis of the turbulent velocity distribution and friction loss data associated with the flow of water in a 100-mm diam corrugated plastic pipe is described....

Supercritical Flow Over Sills
Experimental investigations have been carried out to study the supercritical flow over a square section sill for all flow situations, except the jump condition. The supercritical flow...

Nonlinear Flow of Wave Crests Past a Thin Pile
The measured pattern of peak water line around a vertical circular pile in periodic wave action can disagree with wave-scattering theory, showing a nonlinear dependence on incident wave...

Manning's Roughness for Artificial Grasses
Roughnesses of three types of artificial grass are investigated. Artificial grass consists of a mattress that simulates the soil surface where groups of grass are fixed in longitudinal...

Mean Wind Loading on Rough-Walled Cooling Towers
Mean pressure distributions were measured on a cooling tower model in uniform wind for several longitudinal-rib configurations and two uniformly distributed roughnesses. The base pressure...

Accurate Explicit Equation for Friction Factor
The solution of pipe flow problems encountered in engineering practice requires an intermediate step of computation of friction factor. The friction factor of commercial pipes is described...

Sediment Inertia as Cause of River Antidunes
The formation of antidunes on riverbeds is explained in terms of sediment inertial effects. Due to inertia, bed sediment in transport cannot respond immediately to flow changes. To quantify...

Turbulent Structure near Smooth Boundary
For a Reynolds number range 18,600

Stilling Basin Design for Low Froude Number
Laboratory tests were conducted to investigate the possibilities of increasing the energy loss and shortening the required stilling basin length for the Froude number range of 2.5 - 4.5....

Turbulent Flow of Power-Law Fluids
Velocity profiles for the steady incompressible turbulent flow of power-law fluids through circular conduits were calculated by numerical quadrature considering both the viscous stresses...

Effect of Separation Angle on Vortex Streets
Experiments were made at a constant Reynolds number of 1.5x104 based on model width to find how the vortex wake of a two-dimensional bluff body was...

Wave Forces on Bottom-Mounted Large-Diameter Cylinder
A systematic set of experimental results for the wave force acting on a large horizontal bottom-mounted circular cylinder is presented and compared with a simple theory based on an unseparated...

Characteristics of Turbulent Boundary Shear Stress
The results of limited measurements of the instantaneous boundary shear stress in smooth boundary, free surface flows are presented. A commercially available, flush surface, hot-film sensor...

Variation of Regime Coefficients in Pakistan Canals
The three degrees-of-freedom in a straight alluvial canal can be represented by Froude number F; width-depth ratios, and energy gradient S....

Stability of Laminar Flow at Seabed
The flow produced by water waves in the laminar boundary layer above a two-dimensional rough bed is studied analytically. At low Reynolds numbers the fluid drifts in closed recirculating...

Velocities Above Rough Bed in Oscillatory Flow
The fluid velocities close to a two-dimensional rough bed are calculated for laminar oscillatory flow, similar to that produced by waves near the seabed. At low Reynolds numbers a small-perturbation...

Turbulence in Wakes of Roughness Elements
The results of an experimental investigation of the turbulent flow in a pipe roughened with hemispheres are reported. The roughness concentration was varied by changing the size of roughness...

Flow Characteristics of Sloping Channel Jumps
This paper presents an experimental study of the mean flow characteristics of hydraulic jumps formed in sloping rectangular channels with slopes of 2-25%. The supercritical Froude number...

Enhanced Dispersion in Drag Reducing Open Channel Flow
Results are presented concerning the effect of high polymer drag reducing additives on turbulent dispersion in open channel flow. Theoretical analysis shows that the dispersion coefficient...

 

 

 

 

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