Journal of Fluids Engineering: Recent submissions
Now showing items 3001-3020 of 9024
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Review: Adapting Scalar Turbulence Closure Models for Rotation and Curvature
(The American Society of Mechanical Engineers (ASME), 2011)Scalar, eddy viscosity models are widely used for predicting engineering turbulent flows. System rotation, or streamline curvature, can enhance or reduce the intensity of turbulence. Methods to ... -
Entropy Generation in a Boundary Layer Transitioning Under the Influence of Freestream Turbulence
(The American Society of Mechanical Engineers (ASME), 2011)The objective of the present research is to develop new fundamental knowledge of the entropy generation process in laminar flow with significant fluctuations (called pre-transition) and during ... -
Characterization of Mixing in a Simple Paddle Mixer Using Experimentally Derived Velocity Fields
(The American Society of Mechanical Engineers (ASME), 2011)The flow field in a cylindrical container driven by a flat bladed impeller was investigated using particle image velocimetry (PIV). Three Reynolds numbers (0.02, 8, 108) were investigated for ... -
Analytic Solution for the Magnetohydrodynamic Rotating Flow of Jeffrey Fluid in a Channel
(The American Society of Mechanical Engineers (ASME), 2011)In this work, the homotopy analysis method is applied to enable discussion of the three-dimensional shrinking flow of Jeffrey fluid in a rotating system. The fluid is electrically conducting ... -
Experimental Investigations of Transfer Phenomena in a Confined Plane Turbulent Impinging Water Jet
(The American Society of Mechanical Engineers (ASME), 2011)In this study, we are interested in the hydrodynamics of impinging plane jets. Plane jets are widely used in ambience separation in HVAC, fire safety, food process engineering, cooling of ... -
Equivalent Linearized Mechanical Model for Tuned Liquid Dampers of Arbitrary Tank Shape
(The American Society of Mechanical Engineers (ASME), 2011)This paper presents a model to describe the behavior of sloshing in a general tank with a uniform fluid depth. An equivalent linearized mechanical model is developed for a tuned liquid damper ... -
Numerical Investigation of Guide-Plate Induced Pressure Fluctuations on Guide Vanes of Three Gorges Turbines
(The American Society of Mechanical Engineers (ASME), 2011)A new type of cavitation triggered by boundary-layer turbulence-production has been identified from the turbines of the Three Gorges Power Station. Our previous studies point out that the addition ... -
The Influence of Compressibility on the Aerodynamics of an Inverted Wing in Ground Effect
(The American Society of Mechanical Engineers (ASME), 2011)For inverted wings in close ground proximity, such as race car configurations, the aerodynamic ground effect can produce local velocities significantly greater than the freestream and the effects ... -
Analysis of the Flow Past a Fully Appended Hull with Propellers by Computational and Experimental Fluid Dynamics
(The American Society of Mechanical Engineers (ASME), 2011)The flow in the stern region of a fully appended hull is analyzed by both computational and experimental fluid dynamics. The study is focused on the velocity field induced by the rotating ... -
Pressure Drop in Generating Free-Surface Liquid Microjet Array From Short Cylindrical Orifices
(The American Society of Mechanical Engineers (ASME), 2011)Liquid microjet arrays have received a lot of research attention in recent years due to its high heat flux cooling capability. The microjets are generated from a jet head cavity with a liquid ... -
Analysis of Droplet Generation in Electrospray Using a Carbon Fiber Based Microfluidic Emitter
(The American Society of Mechanical Engineers (ASME), 2011)This work presents simulation of jet break up in electrospray ionization using a microfluidic emitter. The emitter comprises a pointed carbon fiber located coaxial with a fused silica capillary ... -
Winglet Dihedral Effect on Flow Behavior and Aerodynamic Performance of NACA0012 Wings
(The American Society of Mechanical Engineers (ASME), 2011)This study investigates the effects of Reynolds number, angle of attack, and winglet dihedral (δ) on the smoke-streak flow patterns, surface oil-flow configurations, and aerodynamic performance ... -
Wall Pressure Profile Around Cylindrical Rods in Yawed Gas Flow
(The American Society of Mechanical Engineers (ASME), 2011)The distribution of wall pressures in yawed flow through an array of cylindrical tubes inclined at different angles between 30° and 90° was experimentally studied using air at atmospheric ... -
Incompressible Criterion and Pressure Drop for Gaseous Slip Flow in Circular and Noncircular Microchannels
(The American Society of Mechanical Engineers (ASME), 2011)Slip flow in various noncircular microchannels has been further examined, and a simple model for a normalized Poiseuille number is proposed. As for slip flow, no solutions or graphical and ... -
Suction-Injection Control of Shear Banding in Non-Isothermal and Exothermic Channel Flow of Johnson-Segalman Liquids
(The American Society of Mechanical Engineers (ASME), 2011)For certain values of the material parameters, certain viscoelastic fluid models allow for a nonmonotonic relationship between the shear stress and shear rate in simple flows. We consider channel ... -
A Review of X-Ray Flow Visualization With Applications to Multiphase Flows
(The American Society of Mechanical Engineers (ASME), 2011)Flow visualization and characterization of multiphase flows have been the quest of many fluid mechanicians. The process is fairly straight forward only when there is good optical access (i.e., ... -
The Instability of Flow Through a Slowly Diverging Pipe With Viscous Heating
(The American Society of Mechanical Engineers (ASME), 2011)The nonparallel linear stability analysis of flow through a slowly diverging pipe undergoing viscous heating is considered. The pipe wall is maintained at constant temperatures and Nahme’s law ... -
Numerical Simulation of Start-Up Jets in a Mixing Chamber
(The American Society of Mechanical Engineers (ASME), 2011)Numerical simulations of the transient flow of helium injected into an established background flow of nitrogen were carried out to identify the dominant features of the transient mixing process ... -
Numerical Analysis of Three Types of Cavitation Surge in Cascade
(The American Society of Mechanical Engineers (ASME), 2011)In the present study, numerical analysis of a cavitating three-blade cyclic flat-plate cascade was performed considering cavitation surge, which is a type of cavitation instability in pumping ... -
On the Effects of a Flexible Structure on Boundary Layer Stability and Transition
(The American Society of Mechanical Engineers (ASME), 2011)Delaying the onset of boundary layer transition has become a major research area in the last few years. This delay can be achieved by either active or passive control techniques. In the ...