Integrating-Float Measurements at Low Velocities
Flow measurement by the integrating-float method was tested in a rectangular flume 1 ft. wide and 2 ft. deep. Stainless steel hollow spheres, 5/8-in. diam., were used as floats. Accuracy...

Clogging of Porous Column of Spheres by Sediment
When a sediment suspension moves downward at a constant laminar flow through a vertical porous column packed regularly with uniform spheres and having critical pores which permit passage...

Head Losses in Wyes and Manifolds
Head loss coefficients are determined experimentally for symmetrical and unsymmetrical flow through nine symmetrical conical and spherical wyes and manifolds. The diameters of the main...

Wall Effect on a Sphere in a Rotating Viscous Fluid
Experiments were carried out to study the wall effect on the slow motion of a sphere along the axis of a rotating cylinder of viscous liquid. In comparison to Stokes flow of a sphere along...

Stability of Rock Slopes—Graphical Methods
In a previous paper the writers presented a method for the three-dimensional study of the stability of rock slopes. The weight of the various parameters on the condition of limit equilibrium...

Ocean Wave Forces on A Subsurface Sphere
There is an absence of field data for the surface wave-induced forces on a submarine, spherical structure. An ocean test site was established in 25 ft of water to measure the time histories...

Simulation of Waves by an Underwater Explosion
The properties of water waves produced by underwater explosions were studied in a test basin where the underwater disturbance was simulated by means of a rapidly withdrawn or immersed...

Elastic Behavior of Sand
The total deformation of a mass of sand subjected to a constant stress ratio is divided into an elastic component due to the elastic deformations of the individual particles, and a sliding...

Frequency Analysis of Complete Spherical Shells
The results of the transverse frequency analysis of complete spherical shells by elastic theory and classical, improved, and membrane shell theories are compared. Fundamental frequencies...

Validity of Stokes Theory for Accelerating Spheres
Measured displacement-time relations for spheres gravitationally accelerating from rest through viscous fluids are compared with the displacement-time relations predicted by the Stokes...

Analysis of Integrating-Float Flow Measurement
The classical technique of streamflow measurement by the integrating-float method is reexamined. The effect of float acceleration on discharges measured by the technique is analyzed using...

Deformation of Sand in Hydrostatic Compression
The deformational behavior of a granular soil under hydrostatic compressive stress is studied. A theoretical model consisting of regular arrays of uniform spheres, but with a probabilistic...

Volume Changes in Triaxial and Plane Strain Tests
Volume changes occurring in packings of rigid spheres during deformation under both triaxial and plane strain conditions are analyzed theoretically. It is shown that smaller volume changes...

Stokes Flow Behavior of an Accelerating Sphere
The relation for the force on a sphere undergoing an arbitrary rectilinear acceleration in a viscous fluid was established by Basset in the late nineteenth century. His derivation is based...

Study of Static Pressure Along, a Rough Boundary
An experimental study of the effect of roughness on the measurement of static pressure at a wall is reported. Uniform spheres were used to represent the roughness elements; they were packed...

Added Mass of a Sphere in a Bounded Viscous Fluid
The validity of potential flow and Stokes viscous flow theory was investigated experimentally to determine the effect of a real fluid on an oscillating rigid sphere bounded by a concentric...

Validity of a Stochastic Model for Predicting Subsidence
Experiments performed to investigate the validity of a stochastic model for predicting the subsidence of a granular medium are reported. The experiments consisted of measuring the subsidence...

Accelerated Motion of a Sphere in a Viscous Fluid
An investigation was made of the free fall of a sphere from rest in a viscous fluid in order to gain a better understanding of this fundamental form of accelerated motion. For spheres...

Viscous and Boundary Effects on Virtual Mass
The virtual mass of a sphere oscillating in a fluid filling a fixed concentric spherical shell was determined experimentally for seven ratios of sphere diameter to shell diameter. These...

Dispersion-Permeability Correlation in Porous Media
Longitudinal dispersion and permeability tests were performed in the Darcy flow regime using uniform porous media consisting either of spheres or sand grains....

 

 

 

 

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