Journal of Fluids Engineering: Recent submissions
Now showing items 3781-3800 of 9024
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Large Eddy Simulation of Acoustical Sources in a Low Pressure Axial-Flow Fan Encountering Highly Turbulent Inflow
(The American Society of Mechanical Engineers (ASME), 2007)A large eddy simulation (LES) was applied to predict the unsteady flow in a low-speed axial-flow fan assembly subjected to a highly “turbulent” inflow that is generated by a turbulence grid ... -
CFD Investigation of Gear Pump Mixing Using Deforming/Agglomerating Mesh
(The American Society of Mechanical Engineers (ASME), 2007)A moving-deforming grid study was carried out using a commercial computational fluid dynamics (CFD) solver, FLUENT ® 6.2.16. The goal was to quantify the level of mixing of a lower-viscosity ... -
Carbon Nanotube–Magnetite Composites, With Applications to Developing Unique Magnetorheological Fluids
(The American Society of Mechanical Engineers (ASME), 2007)The development of carbon nanotube (CNT) based technology is limited in part by the lack of effective bulk methods for precisely manipulating and aligning nanotubes at the very fine scale. ... -
Oxygen Separation/Enrichment From Atmospheric Air Using Magnetizing Force
(The American Society of Mechanical Engineers (ASME), 2007)Oxygen is a paramagnetic gas and it has relatively high magnetic susceptibility. On the contrary, nitrogen is a diamagnetic gas and it has relatively low and negative magnetic susceptibility. ... -
Waterjet Peening and Surface Preparation at 600MPa: A Preliminary Experimental Study
(The American Society of Mechanical Engineers (ASME), 2007)An experimental study was conducted to explore the surface preparation as well as the effects of high-pressure waterjet peening at 600MPa on the surface integrity and finish of metals. The ... -
Simulation of Fiber Suspensions—A Multiscale Approach
(The American Society of Mechanical Engineers (ASME), 2007)The present effort is the development of a multiscale modeling, simulation methodology for investigating complex phenomena arising from flowing fiber suspensions. The present approach is capable ... -
A Study of the Effect of Polymer Solution in Promoting Friction Reduction in Turbulent Channel Flow
(The American Society of Mechanical Engineers (ASME), 2007)In this work, turbulent drag reduction in a pipe is investigated by using laser Doppler velocimetry. The effect of decreasing the friction factor of the flow is obtained by addition of high ... -
Fiber Orientation Control Related to Papermaking
(The American Society of Mechanical Engineers (ASME), 2007)The orientation of fibers suspended in a shear flow flowing over a solid wall has been studied experimentally. The possibility to control this orientation with physical surface modifications, ... -
Jet Wiping in Hot-Dip Galvanization
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents an analysis of the gas-jet wiping process in hot-dip galvanization. This technique consists of reducing the liquid film thickness on a moving substrate by applying gas slot ... -
Dynamic Self-Assembly of Spinning Particles
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents a numerical study of the dynamic self-assembly of neutrally buoyant particles rotating in a plane in a viscous fluid. The particles experience simultaneously a magnetic torque ... -
Reversible Electrowetting of Liquid-Metal Droplet
(The American Society of Mechanical Engineers (ASME), 2007)This paper reports experimental investigations on the electrowetting effect of liquid metals, e.g., mercury, on dielectric films. Largest contact angle change of 74deg (from 141degto67deg) is ... -
A Microfluidic Mixer Utilizing Electrokinetic Relay Switching and Asymmetric Flow Geometries
(The American Society of Mechanical Engineers (ASME), 2007)Performances of a hybrid electrokinetic-passive micromixer are predicted numerically. An h/p-type spectral element method is used to simulate the mixing behavior in microdevices. The numerical ... -
A Theoretical Discussion of a Menisci Micropump Driven by an Electric Field
(The American Society of Mechanical Engineers (ASME), 2007)The potential for miniaturization of analytical devices made possible by advances in micro-fabrication technology is driving demand for reliable micropumps. A wide variety of micropumps exist with ... -
Torque and Bulk Flow of Ferrofluid in an Annular Gap Subjected to a Rotating Magnetic Field
(The American Society of Mechanical Engineers (ASME), 2007)We report analysis and measurements of the torque and flow of a ferrofluid in a cylindrical annulus subjected to a rotating magnetic field perpendicular to the cylinder axis. The presence of ... -
Special Issue on the Magnetic and Electric Field Effects at the Micro- and Nano-Scale Systems and Flows in Material Processing
(The American Society of Mechanical Engineers (ASME), 2007)This collection of selected papers is drawn from those presented at the IMECE 2005 in Orlando, Florida at the Symposia on “Rheology & Fluid Mechanics of Non-Linear Materials” and “Electric ... -
Internal Organizational Measurement for Control of Magnetorheological Fluid Properties
(The American Society of Mechanical Engineers (ASME), 2007)Magnetorheological (MR) fluids change their physical properties when subjected to a magnetic field. As this change occurs, the specific values of the physical properties are a function of the ... -
Near-Field Flow Measurements of a Cavitating Jet Emanating From a Crown-Shaped Nozzle
(The American Society of Mechanical Engineers (ASME), 2007)The effect of a crown-shaped nozzle on cavitation is studied experimentally in the near-field of a 25 mm diameter (D) water jet at ReD=2×105 using particle image velocimetry (PIV) and ... -
Large-Eddy Simulation With Simplified Collisional Microdynamics in a High Reynolds Number Particle-Laden Channel Flow
(The American Society of Mechanical Engineers (ASME), 2007)Computing high Reynolds number channel flows laden by heavy solid particles requires excessive CPU resources to calculate interparticle collisions. Since the frequency of these collisions is high, ... -
Simulation and Analysis of High-Speed Droplet Spray Dynamics
(The American Society of Mechanical Engineers (ASME), 2007)An experimentally validated computer simulation model has been developed for the analysis of gas-phase and droplet characteristics of isothermal sprays generated by pressure jet atomizers. Employing ... -
Near-Wall Turbulent Pressure Diffusion Modeling and Influence in Three-Dimensional Secondary Flows
(The American Society of Mechanical Engineers (ASME), 2007)The purpose of this paper is to develop a second-moment closure with a near-wall turbulent pressure diffusion model for three-dimensional complex flows, and to evaluate the influence of the ...