Journal of Fluids Engineering: Recent submissions
Now showing items 2841-2860 of 9024
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Intelligent Image-Based Gas-Liquid Two-Phase Flow Regime Recognition
(The American Society of Mechanical Engineers (ASME), 2012)Identification of different flow regimes in industrial systems operating under two-phase flow conditions is necessary in order to safely design and optimize their performance. In the present work, ... -
Discussion: “Slip-Flow Pressure Drop in Microchannels of General Cross Section”
(The American Society of Mechanical Engineers (ASME), 2012)Partial slip occurs in a variety of important fluid flow situations. Recently several sources used the constant boundary slip assumption for the flow in a tube. By comparing with the exact ... -
Experimental and Computational Investigations to Evaluate the Effects of Fluid Viscosity and Particle Size on Erosion Damage
(The American Society of Mechanical Engineers (ASME), 2012)Zhang et al. (2006) utilized computational fluid dynamics (CFD) to examine the validity of erosion models that have been implemented into CFD codes to predict solid-particle erosion in air and ... -
Fluctuation Characteristics of Spray Velocity Field of Coaxial Convergent Nozzle by Particle-Image-Velocimetry Measurements
(The American Society of Mechanical Engineers (ASME), 2012)Coaxial elements and annular liquid jets are normally utilized in industrial applications to generate sprays. A particle image velocimetry investigation on the transient characteristics of the ... -
Effect of Impeller Speed Perturbation in a Rushton Impeller Stirred Tank
(The American Society of Mechanical Engineers (ASME), 2012)Flow inside an unbaffled Rushton-impeller stirred tank reactor (STR) is perturbed using a time dependent impeller rotational speed. Large eddy simulation (LES) revealed that the perturbation ... -
Behavior of Unsteady Turbulent Starting Round Jets
(The American Society of Mechanical Engineers (ASME), 2012)Turbulent starting jets with time-varying injection velocities were investigated using high-speed schlieren imaging. Two solenoid-controlled injectors fed a common plenum upstream of an orifice; ... -
Detached Eddy Simulation of Free-Surface Flow Around a Submerged Submarine Fairwater
(The American Society of Mechanical Engineers (ASME), 2012)The effects of reducing submergence depth around a submerged submarine fairwater without its associated appendages is numerically studied using detached eddy simulation. The submerged body is ... -
Pressure Drop for Fully Developed Turbulent Flow in Circular and Noncircular Ducts
(The American Society of Mechanical Engineers (ASME), 2012)The objective of this paper is to furnish the engineer with a simple and convenient means of estimating frictional pressure drop in ducts and the original physical behavior can be clearly ... -
Effects of Blade Wrap Angle Influencing a Pump as Turbine
(The American Society of Mechanical Engineers (ASME), 2012)A pump is not ideally designed to operate as a turbine. To improve the efficiency of a pump as turbine (PAT), the redesign of the PAT, according to the flow of the turbine, is required. ... -
Asymptotic Effect of Initial and Upstream Conditions on Turbulence
(The American Society of Mechanical Engineers (ASME), 2012)More than two decades ago the first strong experimental results appeared suggesting that turbulent flows might not be asymptotically independent of their initial (or upstream) conditions (Wygnanski ... -
Linear Stability Analysis of an Electrified Viscoelastic Liquid Jet
(The American Society of Mechanical Engineers (ASME), 2012)A linear instability analysis method has been used to investigate the breakup of an electrified viscoelastic liquid jet. The liquid is assumed to be a dilute polymer solution modeled by the ... -
Effect of Co-Flow on Near Field Shock Structure
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents the experimental results of underexpanded jets delivered from a central nozzle surrounded by a co-flow. The co-flow is found to be effective in elongating the supersonic ... -
Influence of the Lagrangian Integral Time Scale Estimation in the Near Wall Region on Particle Deposition
(The American Society of Mechanical Engineers (ASME), 2012)In a high temperature pebble-bed reactor core where thousands of pebbles are amassed, the friction between the outer graphite layer of the fuel elements triggers the formation of carbonaceous ... -
A New Pump Application in Heavy Oil Recovery
(The American Society of Mechanical Engineers (ASME), 2012)In order to promote heavy oil recovery and solve the conventional plunger pump problems, which include wear, large leakage, and a stuck pump in the process of heavy oil production, this paper ... -
Unsteady Aerodynamic Flow Investigation Around a Simplified Square-Back Road Vehicle With Drag Reduction Devices
(The American Society of Mechanical Engineers (ASME), 2012)The unsteady flow around a simplified road vehicle model with and without drag reduction devices is investigated. The simulations are carried out using the unsteady RANS in conjunction with the ... -
An Experimental Study on the Oblique Collisions of Water Droplets With a Smooth Hot Solid
(The American Society of Mechanical Engineers (ASME), 2012)The motions of liquid droplets impinging on a solid substrate have been studied experimentally in fundamental research on various types of industrial applications, including spray cooling. The ... -
Fish Injury and Mortality During Passage Through Pumping Stations
(The American Society of Mechanical Engineers (ASME), 2012)An unwanted side effect of pumping stations is that fish suffer from injury and mortality when passing through the pumps and that fish migration is hampered. In recent years, the development ... -
Numerical Prediction of Wind Flow Around Irregular Models
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents numerical predictions of flow around irregular-plan buildings (S-, R-, L- and U-shaped models) in high Reynolds number. The adopted computational approach and numerical models ... -
Analysis of Brinkman-Extended Darcy Flow in Porous Media and Experimental Verification Using Metal Foam
(The American Society of Mechanical Engineers (ASME), 2012)Momentum transport in porous media exists in numerous engineering and process applications, e.g., ground water pollution, storage of nuclear waste, heat exchangers, and chemical reactors. In many ... -
Parametric Study of Dynamic Stall Flow Field With Synthetic Jet Actuation
(The American Society of Mechanical Engineers (ASME), 2012)A parametric study of the interaction between dynamic stall and a zero-net mass flux synthetic jet installed on a wing was investigated by identifying the dominant frequencies in the resulting ...