Journal of Fluids Engineering: Recent submissions
Now showing items 4541-4560 of 9024
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The Approximate Deconvolution Model for Large-Eddy Simulation of Compressible Flows With Finite Volume Schemes
(The American Society of Mechanical Engineers (ASME), 2003)The approximate deconvolution model for large-eddy simulation is formulated for a second-order finite volume scheme. With the approximate deconvolution model, an approximation of the unfiltered ... -
Effects of Concave Curvature on Boundary Layer Transition Under High Freestream Turbulence Conditions
(The American Society of Mechanical Engineers (ASME), 2003)An experimental investigation has been carried out on a transitional boundary layer subject to high (initially 9%) freestream turbulence, strong acceleration (K=(ν/Uw2)(dUw/dx) as high as 9×10−6), ... -
Viscous Fingering in a Hele-Shaw Cell With Finite Viscosity Ratio and Interfacial Tension
(The American Society of Mechanical Engineers (ASME), 2003)A volume tracking method was developed to simulate time-dependent unstable viscous fingering in a Hele-Shaw cell. The effect of finite viscosity ratio μr between displacing and displaced fluids ... -
Design and Analysis of a Surface Micromachined Spiral-Channel Viscous Pump
(The American Society of Mechanical Engineers (ASME), 2003)A new viscous spiral micropump which uses the surface micromachining technology is introduced. The paper outlines the design of a spiral pump fabricated in five levels of polysilicon using ... -
Experimental Investigation of Two Cylindrical Water Columns Subjected to Planar Shock Wave Loading
(The American Society of Mechanical Engineers (ASME), 2003)Two water columns with identical initial diameters of 4.8 mm were placed 30 mm apart inside a shock tube test section and were loaded by a shock wave of Mach number 1.47 in atmospheric ... -
Experimental Analysis of an Axial Inducer Influence of the Shape of the Blade Leading Edge on the Performances in Cavitating Regime
(The American Society of Mechanical Engineers (ASME), 2003)The aim of this paper is to analyze, from experimental results, the influence of the shape of the leading edge and its sharpening on the cavitating behavior of an inducer. The studied inducer ... -
Flutter Limits and Behaviors of Flexible Webs Having a Simplified Basic Configuration in High-Speed Flow
(The American Society of Mechanical Engineers (ASME), 2003)Fluttering conditions were analyzed for webs with a simplified basic configuration with both leading and trailing edges fixed in a uniform flow. The predicted flutter limits are expressed in ... -
Analysis of the Flow in a High-Pressure Die Casting Injection Chamber
(The American Society of Mechanical Engineers (ASME), 2003)The flow in the injection chamber of pressure die casting machines is analyzed using a model based on the shallow-water approximation which takes into account the effects of wave reflection ... -
Mechanism of Hysteretic Characteristics of Wells Turbine for Wave Power Conversion
(The American Society of Mechanical Engineers (ASME), 2003)A Wells turbine for wave power conversion has hysteretic characteristics in a reciprocating flow. The counterclockwise hysteretic loop of the Wells turbine is opposite to the clockwise one of ... -
Influence of Diffuser Angle on a Bluff Body in Ground Effect
(The American Society of Mechanical Engineers (ASME), 2003)The forces and pressures on a generic bluff body in ground effect were investigated. The bluff-body model was equipped with interchangeable underbody diffuser ramps and side plates. Five different ... -
Comparison of Semi-Empirical Correlations and a Navier-Stokes Method for the Overall Performance Assessment of Turbine Cascades
(The American Society of Mechanical Engineers (ASME), 2003)Turbomachinery flows can nowadays be investigated using several numerical techniques to solve the full set of Navier-Stokes equations; nevertheless the accuracy in the computation of losses is ... -
Simulation of Swirling Gas-Particle Flows Using Different Time Scales for the Closure of Two-Phase Velocity Correlation in the Second-Order Moment Two-Phase Turbulence Model1
(The American Society of Mechanical Engineers (ASME), 2003)Three different time scales—the gas turbulence integral time scale, the particle relaxation time, and the eddy interaction time—are used for closing the dissipation term in the transport equation ... -
Dynamics of a Cavitating Propeller in a Water Tunnel
(The American Society of Mechanical Engineers (ASME), 2003)This study investigates the unsteady dynamics and inherent instabilities of a cavitating propeller operating in a water tunnel. First, the steady characteristics of the cavitating propeller such ... -
Effect of Unsteady Wake Passing Frequency on Boundary Layer Transition, Experimental Investigation, and Wavelet Analysis
(The American Society of Mechanical Engineers (ASME), 2003)Detailed experimental and theoretical investigations were carried out to study the effect of unsteady wake passing frequency on the boundary layer transition along the concave surface of a curved ... -
A Comparison of Spreading Angles of Turbulent Wedges in Velocity and Thermal Boundary Layers
(The American Society of Mechanical Engineers (ASME), 2003)Turbulent wedges induced by a three-dimensional surface roughness placed in a laminar boundary layer over a flat plate were visualized for the first time using both shear-sensitive and ... -
An Experimental Investigation of Starting Impinging Jets
(The American Society of Mechanical Engineers (ASME), 2003)Impulsively started impinging jets were experimentally investigated in a water tank utilizing a fluorescent dye technique. The jets were examined prior to and subsequent to impingement. The ... -
Vortex-Induced Vibration Characteristics of Two Fixed-Supported Elastic Cylinders
(The American Society of Mechanical Engineers (ASME), 2003)Interference effects on vortex-induced vibrations of two side-by-side elastic cylinders, fixed at both ends (with no deflection and displacement) in a cross-flow, were experimentally investigated. ... -
Modeling and Qualitative Experiments on Swirling Bubbly Flows: Single Bubble With Rossby Number of Order 1
(The American Society of Mechanical Engineers (ASME), 2003)The behavior of an isolated bubble in a single-phase swirling flow is investigated theoretically and experimentally. The Rossby number is such that the liquid flow can be approximated by a ... -
Exact Solution of the Navier-Stokes Equations for the Fully Developed, Pulsating Flow in a Rectangular Duct With a Constant Cross-Sectional Velocity1
(The American Society of Mechanical Engineers (ASME), 2003)The Navier-Stokes equations have been solved in order to obtain an analytical solution of the fully developed laminar flow in a duct having a rectangular cross section with two opposite equally ... -
Hydrodynamic Force and Heat/Mass Transfer From Particles, Bubbles, and Drops—The Freeman Scholar Lecture
(The American Society of Mechanical Engineers (ASME), 2003)Recent advances on the analytical form of the hydrodynamic force and heat/mass transfer from a particle, bubble, or drop are examined critically. Also some of the recent computational studies, ...