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A Critique of the Ultrasonic Pulse Velocity Method for Testing Concrete
The pulse velocity method is the most widely used ultrasonic nondestructive method for assessing concrete quality. However, it has been well established that the relation between ultrasonic...

Nonlinear Shoaling and Impact of Waves on Coastal Structures
A two-dimensional fully nonlinear potential flow model is used to calculate shoaling of solitary and enoidal waves over a sloping bottom and interaction with submerged or emerged coastal...

Intermittent Kinematics for Nonlinear Random Waves Near Ocean Surface
Taking into account the fluctuations of the free surface for points in the vicinity of the still water level, this study analytically calculates the first four moments of wave velocity...

Landslide-Generated Waves in Reservoirs
This paper investigates surge waves generated by landslides in reservoirs. The Navier-Stokes equations with complete viscous conditions at the free surface are solved numerically for the...

Wind Effect on Oblique Motion of Two Bodies in a Uniform Flow
The wind effect on the general translational motion of a circular cylinder through an inviscid and incompressible fluid, conveyed by a uniform flow at infinity, in the vicinity of another...

Computation of Flow in Ice-Covered Dune-Bed Channels
A numerical method for solution of the Reynolds-averaged Navier-Stokes equations is developed to study the flow over sand dunes in two-dimensional channels. The method is applied to calculate...

Flow Visualization of Lid-Driven Cylindrical Cavity Flow
The lid-driven cylindrical cavity flows in the laminar region are quantitatively visualized by a new flow visualization method called the digital vector velocimetry method. Particle streak...

Micromechanical Simulation of Wave Propagation in Dense Granular Assemblies
Two-dimensional DEM with modified Mindlin's contact law has been used to study the load transfer mechanisms in 'consolidated' granular assemblies. Results of simulation are presented and...

Wave Induced Vortex Near Seashore
The vortex motion behind submerged breakwaters in the nearshore region is studied. The RCPWAVE model (Ebersole et al., 1986) is used to calculate the wave field and thus the radiator stresses...

Similarity Solutions of Starting Jets and Starting Plumes
Similarity solutions of the starting jets and the starting plumes are obtained using a one dimensional model based on the top-hat profiles and the symmetry assumption for the velocity...

Intra Vena Cava Balloon Pumping
An innovative prototype intravenous hollow-fiber oxygenator was developed in 1984 by B.G. Hattler. The device consisted of a microporous, hollow-fiber membrane oxygenator inserted into...

The Morphology and Dynamics of Natural and Laboratory Grain Flows
Artificially generated sand flows that display considerable similarity with field examples on eolian dunes allow documentation of the relationships between grainflow scales and the characteristics...

Discrete Mechanics of Sediment Transport
Usually a granular medium is being represented by a continuous approximation in which the degrees of freedom of individual grains are averaged away in favor of a partial differential equation...

A Sphere Moving Down an Inclined Bumpy Surface
A sphere moving down a bumpy incline in the air is studied theoretically and experimentally. A method based on the principle of energy conservation is used to express the average velocity...

Pulmonary Artery Velocity Profiles in Young Lambs
This report describes progress made in our laboratory in examining pulmonary artery velocity patterns in normally maturing lambs. Lambs from four age groups were selected for study--2...

Flow in a Model Symmetric Bifurcation
Flow through bifurcations is of particular interst to the field of hemodynamics and respiration dynamics. In this paper flow through a model symmetric bifurcation is studied experimentally...

Roll-Waves on a Non-Newtonian Mud Layer
This article extends the theory of roll-waves due to Dressler (1949) to a thin layer of mud modeled as a power law fluid. Roll-waves are periodic bores moving at a constant velocity down...

A New NDT Device for Comprehensive Pavement Maintenance (Theoretical Aspects)
A new nondestructive testing (NDT) device is being developed to detect some precursors to pavement distress. The principle of operation of the device is based upon the generation and detection...

Influence of Gas Phase Turbulence on the Transport of Particles
An interesting and perhaps unexpected flow feature characterizing the transport of a gas-solid suspension in a vertical duct is the radial nonuniformity of particles over the tube cross-section....

Impact Craters on Cosmic Dust: Do Damage to the Spacecraft
The discovery and study of impact crater on cosmic dust to understand the overall micrometeoroid environment and space engineering requirement are important. In this paper, we attempt...

 

 

 

 

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