Journal of Fluids Engineering: Recent submissions
Now showing items 3481-3500 of 9024
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Vortex Dynamics and Shedding of a Low Aspect Ratio, Flat Wing at Low Reynolds Numbers and High Angles of Attack
(The American Society of Mechanical Engineers (ASME), 2009)This study focuses on the detection and characterization of vortices in low Reynolds number separated flow over the elliptical leading edge of a low aspect ratio, flat plate wing. Velocity ... -
Cavitating Turbulent Flow Simulation in a Francis Turbine Based on Mixture Model
(The American Society of Mechanical Engineers (ASME), 2009)As a numerical method to study the cavitation performance of a Francis turbine, the mixture model for the cavity/liquid two-phase flow is adopted in the cavitating turbulent flow analysis ... -
2D Navier–Stokes Simulations of Microscale Viscous Pump With Slip Flow
(The American Society of Mechanical Engineers (ASME), 2009)In this paper we provide numerical solution of the Navier–Stokes equations coupled with energy equation for gaseous slip flow in two-dimensional microscale viscous pumps. A first-order slip ... -
Front Condition for Gravity Currents in Channels of Nonrectangular Symmetric Cross-Section Shapes
(The American Society of Mechanical Engineers (ASME), 2009)We study the variation of the Froude number at the front of gravity currents developed in uniform channels whose cross-section shape depends on a parameter usually used in many numerical and ... -
Drag Reduction in Turbulent Flow With Polymer Additives
(The American Society of Mechanical Engineers (ASME), 2009)The mean velocity profile and friction factor in turbulent flows with polymer additives are investigated using Prandtl’s mixing-length theorem. This study reveals that the mixing-length theorem ... -
Parallel-Plate Conductive Electrodes for the Fabrication of Larger 2D Colloidal Photonic Crystals
(The American Society of Mechanical Engineers (ASME), 2009)A new dielectrophoretic force-induced parallel-plate assembly technique was used to achieve close-packed 2D large colloidal photonic crystals on gold electrodes (∼200 nm thick). The electrodes were ... -
Development of a Novel Oil Cavitation Jet Peening System and Cavitation Jet Erosion in Aluminum Alloy, AA 6063-T6
(The American Society of Mechanical Engineers (ASME), 2009)Compressive residual stresses that improve fatigue strength of material are obtained by peening the surface. Unlike traditional processes, a novel process of oil cavitation jet peening was ... -
Implicit Large Eddy Simulation of Two-Dimensional Homogeneous Turbulence Using Weighted Compact Nonlinear Scheme
(The American Society of Mechanical Engineers (ASME), 2009)For the aim of computing compressible turbulent flowfield involving shock waves, an implicit large eddy simulation (LES) code has been developed based on the idea of monotonically integrated ... -
Experimental Study of a New Flow Conditioner on Disturbed Flow in Orifice Plate Metering
(The American Society of Mechanical Engineers (ASME), 2009)The sensitivity to poor conditioned and swirling flow of flow measurements using an orifice plate are subjects of concern to flowmeter users and manufacturers. Measurements of mass flow rate ... -
Drag Reduction Due to Cut-Corners at the Front-Edge of a Rectangular Cylinder With the Length-to-Breadth Ratio Being Less Than or Equal to Unity
(The American Society of Mechanical Engineers (ASME), 2009)The flow past a rectangular cylinder with small cut-corners at the front-edge is investigated to discuss a relation between drag reduction and the cutout dimension. The rectangular shape is ... -
Performance and Radial Loading of a Mixed-Flow Pump Under Non-Uniform Suction Flow
(The American Society of Mechanical Engineers (ASME), 2009)Many centrifugal pumps have a suction velocity profile, which is nonuniform, either by design like in double-suction pumps, sump pumps, and in-line pumps, or as a result of an installation ... -
Experimental Investigation of Flow Field Structure in Mixing Tee
(The American Society of Mechanical Engineers (ASME), 2009)T-junction is one of the familiar components in the cooling system of power plants with enormous capability of high-cycle thermal fatigue. This research investigates the structure and mixing ... -
Experimental and Computational Study of Oscillating Turbine Cascade and Influence of Part-Span Shrouds
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents a combined experimental and computational study of unsteady flows in a linear turbine cascade oscillating in a three-dimensional bending/flapping mode. Detailed experimental ... -
Exit Flow Behavior of Axial Fan Flows With/Without Impingement
(The American Society of Mechanical Engineers (ASME), 2009)The exit flow patterns of an axial flow fan widely used in electronics cooling are experimentally characterized both in free exit and in the presence of a flat impingement plate. The axial ... -
Numerical Study of Capillary Flow in Microchannels With Alternate Hydrophilic-Hydrophobic Bottom Wall
(The American Society of Mechanical Engineers (ASME), 2009)A two-dimensional numerical simulation of flow in patterned microchannel with alternate layers of different sizes of hydrophilic and hydrophobic surfaces at the bottom wall is conducted here. The ... -
A Study on Flow Transition and Development in Circular and Rectangular Ducts
(The American Society of Mechanical Engineers (ASME), 2009)The present paper reports observations on some aspects regarding the dependence of the transition Reynolds number and flow development on the inlet flow conditions and the entrance length in ... -
Reynolds Number Effects on the Performance Characteristic of a Small Regenerative Pump
(The American Society of Mechanical Engineers (ASME), 2009)This paper studies the effect of the Reynolds number on the performance characteristics of a small regenerative pump. Since regenerative pumps have low specific speeds, they are usually applicable ... -
One-Dimensional Unsteady Periodic Flow Model with Boundary Conditions Constrained by Differential Equations
(The American Society of Mechanical Engineers (ASME), 2009)This paper describes a modeling method for closed-loop unsteady fluid transport systems based on 1D unsteady Euler equations with nonlinear forced periodic boundary conditions. A significant feature ... -
A Novel Explicit Equation for Friction Factor in Smooth and Rough Pipes
(The American Society of Mechanical Engineers (ASME), 2009)In this paper, we propose a novel explicit equation for friction factor, which is valid for both smooth and rough wall turbulent flows in pipes and channels. The form of the proposed equation ... -
Particle Image Velocimetry Study of Rough-Wall Turbulent Flows in Favorable Pressure Gradient
(The American Society of Mechanical Engineers (ASME), 2009)This paper reports an experimental investigation of the effects of wall roughness and favorable pressure gradient on low Reynolds number turbulent flow in a two-dimensional asymmetric converging ...