# Flow Visualization Studies in the Novacor Left Ventricular Assist System

*This paper discusses a series of experiments to visualize and measure flow fields in the Novacor left ventricular assist system (LVAS). The experiments utilize a multiple exposure, optical...*

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...*

Computer Simulation of Granular Flows

*Discrete-particle computer simulations using up to 15,000 identical spheres reproduce particle-scale information obtained from high-speed motion picture observations of disperse, collision-dominated...*

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...*

Computer Simulation of Dry Layered Granular Flow Down an Incline Composed of Grains

*Experiments show that gravity-driven dry granular flows are essentially layered for smooth spheres. This paper describes layer-to-layer interaction in the flow. Assuming two-dimensional...*

Numerical Simulation of a Sphere Moving Down an Incline with Identical Spheres Placed Equally Apart

*This paper describes a numerical study of an elastic sphere moving down an incline with a string of identical spheres placed equally apart. Two momentum equations and a moment 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...*

Fluid Dynamics at the Carotid Bifurcation

*Arterial wall distensibility is believed to be of secondary importance to the general flowfield of the human carotid artery. However, it has been reported that it may have greater influence...*

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...*

Erosion of Steep River Banks and Time Evolution Towards Equilibrium Channel Shape

*A numerical analysis of the time evolution of straight river channels is presented. The bed and bank, material is taken to be coarse, non-cohesive and uniform in size. As a result of the...*

Flow Dynamics in an End-to-End Vascular Graft Junction

*A study consisting of both experimental and numerical methods was performed to determine flow dynamics in the vicinity of an end-to-end anastomosis. The experimentally determined geometries...*

Numerical Simulations of Diastolic Flow Patterns in a Model Left Ventricle with Varying Degrees of Mitral Stenosis

*Blood flow patterns in the left ventricle are undoubtedly influenced by the physical and mechanical state of the natural mitral valve apparatus or the geometry of an artifical valve replacement....*

A Multiple Disk Centrifugal Pump as an Artifical Ventricle

*A pulsatile, multiple disk, centrifugal pump has been analysed and tested for potential use as an artificial ventricle. The pump is similar to a Tesla Turbine design which consists of...*

Granular Flow on a Bumpy Inclined Chute

*Theoretical predictions for steady, uniform granular flows of identical, smooth, nearly elastic disks and spheres on bumpy inclined chutes are obtained. Kinetic constitutive theory is...*

Pattern Formation and Time-Dependence in Flowing Sand

*The authors present results for a number of experiments on flowing granular materials and a novel cellular automata model for the flow of these materials when the grains are long and thin....*

Modeling the Chaotic Behavior in Simple Shear Granular Flows

*Simple shear granular flows have demonstrated a variety of puzzling phenomena. Both computer simulations and physical experiments have discovered particle grouping, layering and shear...*

Mechanics of Granular Materials at Very Low Effective Stress Levels

*Gravity's influence on laboratory specimens of uncemented granular materials subjected to low effective stresses, makes it impossible to evaluate constitutive properties in an unambiguous...*

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....*

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