Journal of Fluids Engineering: Recent submissions
Now showing items 4141-4160 of 9024
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Development of a Tip-Leakage Flow—Part 1: The Flow Over a Range of Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2006)An extensive experimental investigation was carried out to examine the tip-leakage flow on ducted propulsors. The flow field around three-bladed, ducted rotors operating in uniform inflow was ... -
Optimal Yaw Regulation and Trajectory Control of Biorobotic AUV Using Mechanical Fins Based on CFD Parametrization
(The American Society of Mechanical Engineers (ASME), 2006)This paper treats the question of control of a biorobotic autonomous undersea vehicle (BAUV) in the yaw plane using a biomimetic mechanism resembling the pectoral fins of fish. These fins are ... -
Bifurcation Characteristics of Flows in Rectangular Sudden Expansion Channels
(The American Society of Mechanical Engineers (ASME), 2006)The effect of three dimensionality on low Reynolds number flows past a symmetric sudden expansion in a channel was investigated. The geometric expansion ratio in the current study was 2:1 and ... -
Reduction of Noise and Vibrations in a Hydraulic Turbine
(The American Society of Mechanical Engineers (ASME), 1969)This paper describes test procedures and methods used to reduce the abnormal noise and vibrations which had occurred at a hydroelectric station in Japan. Noise level, vibration, and pressure ... -
Identification of Transition to Turbulence in a Highly Accelerated Start-Up Pipe Flow
(The American Society of Mechanical Engineers (ASME), 2006)The transition from a laminar to a turbulent flow in highly accelerated start-up pipe flows is described. In these flows, turbulence springs up simultaneously over the entire length of the ... -
Experimental Validation of the Addition Principle for Pulsating Flow in Close-Coupled Catalyst Manifolds
(The American Society of Mechanical Engineers (ASME), 2006)Designing an exhaust manifold with close-coupled catalyst (CCC) relies heavily on time-consuming transient computional fluid dynamics. The current paper provides experimental validation of the ... -
Multi-Element Unstructured Analyses of Complex Valve Systems
(The American Society of Mechanical Engineers (ASME), 2006)The safe and reliable operation of high-pressure test stands for rocket engine and component testing places an increased emphasis on the performance of control valves and flow metering devices. ... -
Hot-Wire Measurements Around a Controlled Diffusion Airfoil in an Open-Jet Anechoic Wind Tunnel
(The American Society of Mechanical Engineers (ASME), 2006)The aeroacoustic measurements in the large anechoic wind tunnel of Ecole Centrale de Lyon, which previously focused on the wall pressure distribution and the far-field acoustic pressure, are ... -
Modeling of the Onset of Gas Entrainment From a Stratified Two-Phase Region Through Branches on a Curved Surface
(The American Society of Mechanical Engineers (ASME), 2006)The present investigation is focused on the onset phenomena from a stratified two-phase region through a single branch located on a semi-circular wall, resembling a circular reservoir of a CANDU ... -
Simulations and Measurements of Pressure Oscillations Caused by Vortex Ropes
(The American Society of Mechanical Engineers (ASME), 2006)Pressure oscillations caused by vortex rope were measured in the draft tube of a prototype Francis turbine. The three-dimensional, unsteady Reynolds-averaged Navier-Stokes equations with the RNG ... -
Detection of Partial Blockages in a Branched Piping System by the Frequency Response Method
(The American Society of Mechanical Engineers (ASME), 2006)Steady oscillatory flow in a branched piping system with partial blockages is studied by using the frequency response method. The peak pressure frequency diagrams at the downstream end are ... -
Flow Geometry Effects on the Turbulent Mixing Efficiency
(The American Society of Mechanical Engineers (ASME), 2006)Flow geometry effects are examined on the turbulent mixing efficiency quantified as the mixture fraction. Two different flow geometries are compared at similar Reynolds numbers, Schmidt numbers, ... -
The Depth of Correlation in Micro-PIV for High Numerical Aperture and Immersion Objectives
(The American Society of Mechanical Engineers (ASME), 2006)The analytical model for the depth of correlation (measurement depth) of a microscopic particle image velocimetry (micro-PIV) experiment derived by and (Exp. Fluids, 29, pp. S166–S174, 2000) has ... -
Stokes Drag on a Thin Circular Disk Moving Edgewise Midway Between Parallel Plane Boundaries
(The American Society of Mechanical Engineers (ASME), 2006)This technical brief presents experimental results for the drag on a circular disk moving at terminal velocity through a viscous fluid midway between parallel plane walls. The axis of the disk ... -
Oscillation in Height of a Negatively Buoyant Jet
(The American Society of Mechanical Engineers (ASME), 2006)Jets and fountains with reversing buoyancy occur in numerous natural and man-made situations (1) including, for example, oxygen jets directed into molten metal furnaces (2), the overshoot stage ... -
Progressive Waves on Swirling Cavity Flow in a Circular Pipe
(The American Society of Mechanical Engineers (ASME), 1969)The behavior of progressive waves moving through a circular pipe containing a rotating flow of water with an axial cavity is studied both theoretically and experimentally. The theoretical solution ... -
Experimental Study of the Flow in a Simulated Hard Disk Drive
(The American Society of Mechanical Engineers (ASME), 2006)Instantaneous circumferential and radial velocity components of the air flowing past a symmetrical pair of suspension/slider-units (SSUs) attached to an E-Block/arm were measured in a specially ... -
Onset of Vortex Shedding in a Periodic Array of Circular Cylinders
(The American Society of Mechanical Engineers (ASME), 2006)Hopf bifurcation of steady base flow and onset of vortex shedding over a transverse periodic array of circular cylinders is considered. The influence of transverse spacing on critical Reynolds ... -
Numerical Simulation of Two-Dimensional Laminar Incompressible Wall Jet Flow Under Backward-Facing Step
(The American Society of Mechanical Engineers (ASME), 2006)Two-dimensional laminar incompressible wall jet flow over a backward-facing step is solved numerically to gain insight into the expansion and recirculation of flow processes. Transient streamfunction ... -
A Computational Study of Torque and Forces Due to Compressible Flow on a Butterfly Valve Disk in Mid-stroke Position
(The American Society of Mechanical Engineers (ASME), 2006)The ability to accurately predict the aerodynamic torque and lift and drag forces on a 2-D model of a 0.18 aspect ratio biconvex circular-arc disk operating in a compressible flow using ...