Journal of Fluids Engineering: Recent submissions
Now showing items 3541-3560 of 9024
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Application of a Volume Averaged k-ε Model to Particle-Laden Turbulent Channel Flow
(The American Society of Mechanical Engineers (ASME), 2009)A closed set of volume averaged equations for modeling turbulence in the carrier phase of particle-laden flows is presented. The equations incorporate a recently developed dissipation transport ... -
The Aerodynamic Interaction Between an Inverted Wing and a Rotating Wheel
(The American Society of Mechanical Engineers (ASME), 2009)The fundamental aerodynamic influence of downstream wheels on a front wing flow field and vice versa has been investigated using generic wind tunnel models. The research has been conducted using ... -
Models for Vortex-Induced Vibration of Cylinders Based on Measured Forces
(The American Society of Mechanical Engineers (ASME), 2009)This paper develops experimentally based nonlinear models for the vortex shedding forces on oscillating cylinders. The lift in-phase and out-of-phase with cylinder motion and mean drag are ... -
Transient Thin-Film Flow on a Moving Boundary of Arbitrary Topography
(The American Society of Mechanical Engineers (ASME), 2009)The transient two-dimensional flow of a thin Newtonian fluid film over a moving substrate of arbitrary shape is examined in this theoretical study. The interplay among inertia, initial conditions, ... -
Numerical Investigation of Combined Effects of Rarefaction and Compressibility for Gas Flow in Microchannels and Microtubes
(The American Society of Mechanical Engineers (ASME), 2009)In this paper, first, the Navier–Stokes equations for incompressible fully developed flow in microchannels and microtubes with the first-order and second-order slip boundary conditions are analytically ... -
Pressure Fluctuation Prediction of a Model Kaplan Turbine by Unsteady Turbulent Flow Simulation
(The American Society of Mechanical Engineers (ASME), 2009)While larger and larger turbines are being developed, hydraulic stability has become one of the key issues for their performance assessments. An accurate prediction of their pressure fluctuations ... -
Aerodynamic Forces on Multiple Unit Trains in Cross Winds
(The American Society of Mechanical Engineers (ASME), 2009)This paper describes the results of wind tunnel tests that were carried out to measure the aerodynamic characteristics of an electrical multiple unit (EMU) vehicle in a cross wind. The ... -
A Device for Measuring Thin Fluid Flow Depth Over an Inclined Open Rectangular Channel
(The American Society of Mechanical Engineers (ASME), 2009)Accurate knowledge of the fluid flow depth over an inclined rectangular open channel is of obvious value in the modeling of flow characteristics over that channel. Understanding of this type ... -
Weakly Nonlinear Stability Analysis of a Thin Liquid Film With Condensation Effects During Spin Coating
(The American Society of Mechanical Engineers (ASME), 2009)This paper investigates the stability of a thin liquid film with condensation effects during spin coating. A generalized nonlinear kinematic model is derived by the long-wave perturbation method ... -
Control of Vortex Shedding From a Plate at Incidence Angles in the Range of 0–90 Deg
(The American Society of Mechanical Engineers (ASME), 2009)A thin strip cross-sectional element is used to suppress vortex shedding from a plate with a width to thickness ratio of 4.0 at incidence angles in the range of 0–90 deg and a Reynolds ... -
2D Numerical Simulations of Blade-Vortex Interaction in a Darrieus Turbine
(The American Society of Mechanical Engineers (ASME), 2009)The aim of this work is to provide a detailed two-dimensional numerical analysis of the physical phenomena occurring during dynamic stall of a Darrieus wind turbine. The flow is particularly ... -
Creation and Maintenance of Cavities Under Horizontal Surfaces in Steady and Gust Flows
(The American Society of Mechanical Engineers (ASME), 2009)An experimental study of air supply to bottom cavities stabilized within a recess under a horizontal surface has been carried out in a specially designed water tunnel. The air supply necessary ... -
Direct Simulation Based Model-Predictive Control of Flow Maldistribution in Parallel Microchannels
(The American Society of Mechanical Engineers (ASME), 2009)Flow maldistribution, resulting from bubbles or other particulate matter, can lead to drastic performance degradation in devices that employ parallel microchannels for heat transfer. In this work, ... -
Application of MI Simulation Using a Turbulent Model for Unsteady Orifice Flow
(The American Society of Mechanical Engineers (ASME), 2009)Measurement-integrated (MI) simulation is a numerical simulation in which experimental results are fed back to the simulation. The calculated values become closer to the experimental values. In ... -
CFD Modeling and X-Ray Imaging of Biomass in a Fluidized Bed
(The American Society of Mechanical Engineers (ASME), 2009)Computational modeling of fluidized beds can be used to predict the operation of biomass gasifiers after extensive validation with experimental data. The present work focused on validating ... -
Modification of Axial Fan Flow by Trailing Edge Self-Induced Blowing
(The American Society of Mechanical Engineers (ASME), 2009)Axial fans often show adverse flow conditions at the fan hub and at the tip of the blade. The modification of conventional axial fan blade is presented. Hollow blade was manufactured from ... -
Pressure Drop in Laminar Developing Flow in Noncircular Ducts: A Scaling and Modeling Approach
(The American Society of Mechanical Engineers (ASME), 2009)A detailed review and analysis of the hydrodynamic characteristics of laminar developing and fully developed flows in noncircular ducts is presented. New models are proposed, which simplify the ... -
Cavitation Inception in the Wake of a Jet-Driven Body
(The American Society of Mechanical Engineers (ASME), 2009)Although cavitation inception in jets has been studied extensively, little is known about the more complex problem of a jet flow interacting with an outer flow behind a moving body. This ... -
Assessment of DES Models for Separated Flow From a Hump in a Turbulent Boundary Layer
(The American Society of Mechanical Engineers (ASME), 2009)Separated flow past a hump in a turbulent boundary layer is studied numerically using detached-eddy simulation (DES), zonal detached-eddy simulation (ZDES), delayed detached-eddy simulation (DDES), ... -
An Experimental Investigation of the Flow Fields Within Geometrically Similar Miniature-Scale Centrifugal Pumps
(The American Society of Mechanical Engineers (ASME), 2009)Flow fields within two miniature-scale centrifugal pumps are measured and analyzed to facilitate an understanding of how scaling influences performance. A full-scale pump, of impeller diameter ...