Journal of Fluids Engineering: Recent submissions
Now showing items 3741-3760 of 9024
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Direct Numerical Simulation of Turbulent Flow Around a Rotating Circular Cylinder
(The American Society of Mechanical Engineers (ASME), 2007)Turbulent flow around a rotating circular cylinder has numerous applications including wall shear stress and mass-transfer measurement related to the corrosion studies. It is also of interest in ... -
Suppression of Cavitation in Inducers by J-Grooves
(The American Society of Mechanical Engineers (ASME), 2007)Cavitation is a serious problem in the development of high-speed turbopumps, and an inducer is often used to avoid cavitation in the main impeller. Thus, the inducer often operates under the ... -
Interested in Cavitation Erosion?
(The American Society of Mechanical Engineers (ASME), 2007)ASTM's Subcommittee G02.10 on Erosion would like to hear from you if you have any interest in cavitation erosion testing. Do you (or your organization): -
Validation of Two-Fluid Eulerian CFD Modeling for Microbubble Drag Reduction Across a Wide Range of Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2007)An Eulerian two-fluid computational fluid dynamics model has been developed for flows with microbubble drag reduction (MBDR). This paper focuses on recent validation studies for MBDR flows across ... -
Molecular Dynamics Simulation of Adsorbent Layer Effect on Tangential Momentum Accommodation Coefficient
(The American Society of Mechanical Engineers (ASME), 2007)The tangential momentum accommodation coefficient (TMAC) is used to improve the accuracy of fluid flow calculations in the slip flow regime where the continuum assumption of zero fluid velocity ... -
Axisymmetric Stagnation—Point Flow and Heat Transfer of a Viscous Fluid on a Rotating Cylinder With Time-Dependent Angular Velocity and Uniform Transpiration
(The American Society of Mechanical Engineers (ASME), 2007)The unsteady viscous flow and heat transfer in the vicinity of an axisymmetric stagnation point of an infinite rotating circular cylinder with transpiration U0 are investigated when the angular ... -
CFD Simulations and Experiments of Flow Fluctuations Around a Steam Control Valve
(The American Society of Mechanical Engineers (ASME), 2007)Under certain opening conditions (partial opening) of a steam control valve, the piping system in a power plant occasionally experiences large vibrations. To understand the valve instability that ... -
On the Mechanisms Affecting Fluidic Vectoring Using Suction
(The American Society of Mechanical Engineers (ASME), 2007)Suction was applied asymmetrically to the exhaust of a rectangular subsonic jet creating a pressure field capable of vectoring the primary flow at angles up to 15deg. The suction simultaneously ... -
Thermal and Flow Fields Modeling of Fast Spark Discharges in Air
(The American Society of Mechanical Engineers (ASME), 2007)In this study, a two-dimensional axisymmetric computational model of spark discharge in air is presented to provide a better understanding of the dynamics of the process. Better understanding ... -
Fluctuation of Air-Water Two-Phase Flow in Horizontal and Inclined Water Pipelines
(The American Society of Mechanical Engineers (ASME), 2007)Air in water flow is a frequent phenomenon in hydraulic structures. The main reason for air entrainment is vortices at water intakes, pumping stations, tunnel inlets, and so on. The accumulated ... -
Localized Structures in Vertically Vibrated Granular Materials
(The American Society of Mechanical Engineers (ASME), 2007)Granular materials exhibit unusual kinds of behavior, including pattern formations during the shaking of the granular materials; the characteristics of these various patterns are not well understood. ... -
On the Stability of Two Superposed Viscous-Viscoelastic (Walters B′) Fluids
(The American Society of Mechanical Engineers (ASME), 2007)The Rayleigh-Taylor instability of a Newtonian viscous fluid overlying Walters B′ viscoelastic fluid is considered. For the stable configuration, the system is found to be stable or unstable ... -
Particle Image Velocimetry Evaluation of a Novel Oscillatory-Flow Flexible Chamber Mixer
(The American Society of Mechanical Engineers (ASME), 2007)This paper describes a novel oscillatory-flow mixer consisting of a pair of flexible chambers connected by a perforated plate, or septum. During operation, the septum undergoes reciprocating ... -
Mean and Fluctuating Velocity Characteristics of a Separated Shear Layer Past a Surface Mounted Block
(The American Society of Mechanical Engineers (ASME), 2007)The mean velocity, Reynolds stress, and mean vorticity regions of a separated shear layer over a surface mounted block are investigated by 2D Digital Particle Image Velocimetry (DPIV) for three ... -
A Functional Correlation for the Primary Breakup Processes of Liquid Sheets Emerging From Air-Assist Atomizers
(The American Society of Mechanical Engineers (ASME), 2007)The study aims to highlight a general relationship between the characteristic variables of liquid sheet breakup and the principal forces of the flow domain. To accomplish this objective, an ... -
CFD-Based Design Optimization for Hydro Turbines
(The American Society of Mechanical Engineers (ASME), 2007)A computational fluid dynamics-based design system with the integration of three blade design approaches, automatic mesh generator and CFD codes enables a quick and efficient design optimization ... -
On the Use of the Squire-Long Equation to Estimate Radial Velocities in Swirling Flows
(The American Society of Mechanical Engineers (ASME), 2007)A method to estimate the radial velocity in swirling flows from experimental values of the axial and tangential velocities is presented. The study is motivated by the experimental difficulties ... -
Concentration Field Measurements Within Isolated Turbulent Puffs
(The American Society of Mechanical Engineers (ASME), 2007)The structure of passive scalar concentration field within isolated turbulent puffs was measured using the planar laser Mie scattering technique. Puffs were generated by injecting seeded air ... -
Curvature Law of the Wall for Swirling Axial Flows in Rotating Machinery
(The American Society of Mechanical Engineers (ASME), 2007)A new law of the wall accounting for curvature effects in swirling axial flows is derived. The influence of the curvature on the turbulence mixing lengths in both axial and tangential directions ... -
Finite Element and Neural Network Modeling of Viscoelastic Annular Extrusion
(The American Society of Mechanical Engineers (ASME), 2007)Plastics blow molding has grown rapidly for the past couple of decades. Annular parison extrusion is a critical stage in extrusion blow molding. In this work, numerical simulations on the ...