Journal of Fluids Engineering: Recent submissions
Now showing items 3441-3460 of 9024
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Maximum Drag Reduction Asymptote of Polymeric Fluid Flow in Coiled Tubing
(The American Society of Mechanical Engineers (ASME), 2009)This study experimentally investigates the drag reduction characteristics of the most commonly used polymer fluids in coiled tubing applications. The flow loop employed consists of 12.7mm straight ... -
Experimental Study of the Flow Induced by a Sinusoidal Dielectric Barrier Discharge Actuator and Its Effects on a Flat Plate Natural Boundary Layer
(The American Society of Mechanical Engineers (ASME), 2009)Since the mid-1990s, electrohydrodynamic actuators have been developed for modifying on subsonic airflows. The principle of plasma action is the use of the direct conversion of electrical energy ... -
Simulation of Turbine Blade Trailing Edge Cooling
(The American Society of Mechanical Engineers (ASME), 2009)The cause of overprediction of cooling efficiency by unsteady Reynolds averaged simulations of turbine blade trailing edge cooling flow is investigated. This is due to the deficiency in the ... -
Efficiency Improvement of Centrifugal Reverse Pumps
(The American Society of Mechanical Engineers (ASME), 2009)Pumps as turbines have been successfully applied in a wide range of small hydrosites in the world. Since the overall efficiency of these machines is lower than the overall efficiency of ... -
Effect of Side Wind on a Simplified Car Model: Experimental and Numerical Analysis
(The American Society of Mechanical Engineers (ASME), 2009)A prior analysis of the effect of steady cross wind on full size cars or models must be conducted when dealing with transient cross wind gust effects on automobiles. The experimental and ... -
Passive Manipulation of Separation-Bubble Transition Using Surface Modifications
(The American Society of Mechanical Engineers (ASME), 2009)Through experiments using two-dimensional particle-image velocimetry (PIV), this paper examines the nature of transition in a separation bubble and manipulations of the resultant breakdown to ... -
PIV-POD Investigation of the Wake of a Sharp-Edged Flat Bluff Body Immersed in a Shallow Channel Flow
(The American Society of Mechanical Engineers (ASME), 2009)This paper reports particle-image velocimetry measurements of instantaneous velocity fields in the wake of a sharp-edged bluff body immersed vertically in a shallow smooth open channel flow. The ... -
Quasi-1D Unsteady Conjugate Module for Rocket Engine and Propulsion System Simulations
(The American Society of Mechanical Engineers (ASME), 2009)A new quasi-one-dimensional procedure (one-dimensional with area change) is presented for the transient solution of real-fluid flows in lines and volumes including heat transfer effects. The solver ... -
Motion of a Single Newtonian Liquid Drop Through Quiescent Immiscible Visco-Elastic Liquid: Shape and Eccentricity
(The American Society of Mechanical Engineers (ASME), 2009)The shape of a single Newtonian liquid drop moving freely under gravity in quiescent non-Newtonian liquid (visco-inelastic and visco-elastic) has been studied. Strong effect of fluid elasticity ... -
Characteristics and Control of the Draft-Tube Flow in Part-Load Francis Turbine
(The American Society of Mechanical Engineers (ASME), 2009)Under part-load conditions, a Francis turbine often suffers from very severe low-frequency and large-amplitude pressure fluctuation, which is caused by the unsteady motion of vortices (known as ... -
Effects of Jet Obliquity on Hydraulic Jumps Formed by Impinging Circular Liquid Jets on a Moving Horizontal Plate
(The American Society of Mechanical Engineers (ASME), 2009)The present work attempts to investigate the effects of jet obliquity on the spatial patterns formed as a consequence of hydraulic jumps due to the impingement of circular liquid jets on ... -
Modeling the Onset of Gas Entrainment in a Single Downward Discharge From a Stratified Gas-Liquid Region With Liquid Crossflow
(The American Society of Mechanical Engineers (ASME), 2009)The critical height at the onset of gas entrainment, in a single downward oriented discharge from a stratified gas-liquid region with liquid crossflow, was modeled. The assumptions made in the ... -
Hot-Wire Anemometry for Velocity Measurements in Nanopowder Flows
(The American Society of Mechanical Engineers (ASME), 2009)A new technique for velocity-field measurements in fine granular systems is introduced. The hot-wire anemometry, mainly used for gaseous flows, is applied to nanopowders and is found to be a ... -
Perspective: Validation—What Does It Mean?
(The American Society of Mechanical Engineers (ASME), 2009)Ambiguities, inconsistencies, and recommended interpretations of the commonly cited definition of validation for computational fluid dynamics codes/models are examined. It is shown that the ... -
Modeling of Cavitation Bubble Dynamics in Multicomponent Mixtures
(The American Society of Mechanical Engineers (ASME), 2009)Investigation on cavitation in multicomponent (solid-liquid and liquid-liquid) mixtures has many applications in the industries and engineering. In this paper, for simulation of multicomponent ... -
Improvements of Particle Near-Wall Velocity and Erosion Predictions Using a Commercial CFD Code
(The American Society of Mechanical Engineers (ASME), 2009)The determination of a representative particle impacting velocity is an important component in calculating solid particle erosion inside pipe geometry. Currently, most commercial computational fluid ... -
Parameters for Assessing Oil Reservoir Water Flooding Additives
(The American Society of Mechanical Engineers (ASME), 2009)This paper is concerned with deriving parameters for assessing the effectiveness of fluid additives to improve water flooding during enhanced oil recovery. We focus particularly on the use of ... -
A Principle to Generate Flow for Thermal Convective Base Sensors
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents a thin millimeter-scaled device that can generate a closed flow within itself with a velocity of the order of a few m/s. The device comprises a piezoelectric pump with a ... -
Pressurized Flow in a Mesostructured Silica Modified by Silane Groups
(The American Society of Mechanical Engineers (ASME), 2009)By applying a quasihydrostatic pressure, water or electrolyte solution can be compressed into a surface treated MSU-H mesoporous silica. Based on the pressure-volume curves, thermodynamic and ... -
Assessment Measures for Engineering LES Applications
(The American Society of Mechanical Engineers (ASME), 2009)Anticipating that large eddy simulations will increasingly become the future engineering tool for research, development, and design, it is deemed necessary to formulate some quality assessment ...