Prediction of Near-Surface Drift Currents from Wind Velocity
A practical procedure is outlined for determining wind-induced drift currents near the free surface, at all fetches, from a single wind-velocity measurement. The wind stress is scaled...

Energy Losses at 90° Pipe Junctions
The loss coefficients and the power-loss coefficients for four smooth tees with diameter ratio of unity were determined experimentally for each of all configurations of flow through tees....

Turbulent Entrainment in Buoyant Jets and Plumes
The behavior of turbulent buoyant jets in uniform density environments is found to be governed by an entrainment function and buoyancy function, both of which are functions of the local...

Bed Scour at End-Dump Channel Constrictions
One method of constricting a channel is by end-dumping loose rockfill from one or both banks. This study is concerned with bed scour that occurs around the leading face and downstream...

Wave Forces on Submerged Objects of Symmetry
Stokes' linear irrotational wave theory is employed to obtain expressions for wave forces on submerged objects of symmetry, e.g., a hemisphere or a sphere, a horizontal halfcylinder...

Spatially Varied Flow over Side-Weirs
An experimental investigation of the flow over sharp edged side-weirs in rectangular channels is reported. The experiments cover subcritical and supercritical flow regimes with weirs of...

Gradually Varying Two-Layer Stratified Flow
The basic equations of stratified flow in fiords are outlined. The mechanism of entrainment is physically explained, and the entrainment is then related to the shear stress at the interface...

Oil Booms in Tidal Currents
The oil capacity of a boom deployed in U-shape in a current depends primarily on the densimetric Froude number, with a critical Froude number above which the boom holds no oil, and an...

Drag Coefficient of Cylinders in Turbulent Flow
The effects of free-stream turbulence on the drag coefficient of a circular cylinder were investigated experimentally in an air duct. The experiments were performed over a range of Reynolds...

Reattaching Flow Downstream of Leaf Gate
Measurements have been made of the mean velocities and wall pressures downstream of a blockage simulating a partially closed leaf gate, and the extent of recirculation has been formed....

Dynamics of Contained Oil Slicks
An oil slick contained on the surface of a flowing stream may be divided into two zones of influence; a frontal region where dynamic forces are dominant and a viscous zone where viscous...

Boundary Layer Effects on Hydraulic Jump Location
The rate of displacement of the toe of a hydraulic jump along a channel with respect to change in tailwater elevation is defined as the position sensitivity of the jump. The steady flow...

Appearance of Unstable Buoyant Jet
The flow of a turbulent vertical plume in a stagnant ambient fluid of uniform density was examined theoretically and experimentally. It was shown that a real solution to the equations...

Turbulence Effects on Drag of Sharp-Edged Bodies
Contrary to popular opinion, wind tunnel tests showed that the drag coefficient of angular shaped bodies is significantly affected by the intensity of the free stream turbulence. For some...

Pipelining of Low-Centration Sand-Water Mixtures
The present study deals with critical deposit velocity VC, defined as the velocity at which particles begin to settle from the carrying medium and...

Effects of Inflow Condition on Hydraulic Jump
The particular aspect of the jump phenomenon considered in the paper concerns the condition of inflow, i.e., the state of flow development of the supercritical stream. Based on an unconventional...

Supercritical Flow over Sills at Incipient Jump Conditions
A laboratory investigation has been conducted to study the conditions mainly responsible for the stabilization and prediction of the hydraulic jump in a rectangular, horizontal-bed channel...

Orifice Losses for Laminar Approach Flow
In all, 25 orifices are studied which include sharp-edged concentric, eccentric and segmental orifices, quadrant-edged concentric orifices and square-edged long orifices. The β ratio (ratio...

Brink Depth for Trapezoidal Broad-Crested Weir
Brink depth characteristics include the relationship between brink depth (yo) and critical depth for parallel flow (yc);...

Onset of Instability of Power-Law Fluid in Couette Flow
The critical Reynolds numbers at the onset of instability of a Newtonian and a power-law fluid, respectively, in the annulus between two coaxial cylinders, with the inner cylinder rotating...

 

 

 

 

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