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Effect of Stenotic Geometry on Blood Flow Behavior
The dynamic characteristics of the blood flow is affected by the area reduction of stenosis. To estimate the severity of stenosis, the information about the geometry should also be accounted....

Simulation of Blood-Heart Interaction: Validation of Approach
An existing pressure correction method to model unsteady flow with arbitrarily moving boundaries has been adapted to simulate the interaction of three-dimensional blood flow with a mitral...

Three-Dimensional Blood Flows Associated with Intra-Aortic Balloon Counterpulsation
Three-dimensional blood flow processes associated with intra-aortic balloon counterpuslation (IABP) are calculated using a Cray YMP supercomputer. The mathematical model incorporates a...

A Computer Simulation of the Blood Flow at the Aortic Bifurcation with Flexible Walls
To understand the possible role of hemodynamics in the atherogenesis, especially the effect of the flexibility of the arteries, a two-dimensional numerical model for the blood flow at...

Finite Analytic Explicit Scheme for Viscous Burgers' Equation
Burgers' equation is numerically analyzed by finite analytic method. The basic idea of finite analytic method is to incorporate the analytic solution of partial differential...

Spatial Coherence in the Chaotic Dynamics of Multi-Degree-of-Freedom Elastic Impact Oscillators
In this paper, we describe a method for estimating the number of degrees of freedom needed to adequately model nonlinear structural systems. We apply the method to the study of chaotic...

Thermal Effects in a Transient Study of Fracture
Studies, e.g. Zehnder and Rosakis (1989), indicate that fracture is associated with temperature rises in inelastic zones near the crack edge. To gain more insight into this phenomenon,...

Geometry of Yield Surfaces for Frictional Flow of Granular Materials
In the frictional flow regime, the discrete particles which compose of granular material roll or slide over one another, maintaining essentially continuous contact. Many theorists, including...

Instability in Granular Chute Flows
Numerical simulations showed that granular flows in a vertical chute can flow as a steady, uniform stream or as an intermittent slug flow. In numerical experiments slugs or grouping of...

Microstructure and Stress Differences in Shearing Flows
Steady shearing flows of highly inelastic particles are simulated using rigid and slightly deformable sphere models. Large first normal stress differences in small systems are observed,...

Computer Simulations of Rapid Granular Flows Interacting with a Flat, Frictional Boundary
This paper compares the results of numerical simulations for the rapid, steady flow of identical spheres colliding with a flat frictional boundary with the recent predictions of Jenkins...

Simulations of Gravity-Driven Channel Flows of Disks Floating on the Flowing Viscous Fluid
A two-dimensional discrete element model has been applied to the problem of gravity-driven channel flow of uniform disks. The particles are floating on the surface of the flowing fluid...

Simulation of the Quasi-Static Deformation of 2D Assemblages of Rigid Discs
Although the importance of dilatancy in the constitutive behaviour of granular materials has been recognized for some time, conclusions about its evolution and dependence on different...

Interparticle Sliding and Rolling
Numerical experiments are done with a continuum plasticity program in order to study the initiation and evolution of shear bands. Many elements are used in order to resolve families of...

Flows of Hazardous Materials Through States by Rail
This paper presents information on the tonnages of hazardous materials passing through each of the contiguous 48 states (and the District of Columbia) by rail. The quantities are estimated...

Measurements of Nutrient and Metal Fluxes from the Sea Floor in the Area Around the Whites Point Sewage Outfall, Los Angeles, California
Studies are underway to determine the influence of sewage outfall-impacted sediment on the exchange of nutrients and trace metals in the coastal marine environment. Utilizing a benthic...

Development of Long Beach Downtown Marina
This paper describes the planning and construction of the new Alamitos Bay Marina just offshore of Long Beach's downtown shoreline. From an engineering standpoint the construction...

Hydrodynamic Behavior of Cohesive Sediments in Turbulent Flow
To meet both engineering and basic research requirements, a series of experiments on the deposition of cohesive soil were conducted in an annular rotating fiberglass channel-ring system...

Dynamic Flushing of Pocket Marinas
The expanding demand for marina space combined with just concerns for the coastal environment has developed an urgent need for methods for evaluation of the flushing characteristics of...

Experiments on Stratified Flows: A Comparison with Theory
Stratified flows caused by salt wedges in estuaries, fjord flows and power station cooling waters represent very complicated flow situations with regard to their stability and rates of...

 

 

 

 

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