Journal of Fluids Engineering: Recent submissions
Now showing items 2901-2920 of 9024
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Mixed Convection Flow of Micropolar Fluid in an Open Ended Arc-Shape Cavity
(The American Society of Mechanical Engineers (ASME), 2012)Numerical simulations for mixed convection flow of micropolar fluid in an open ended arc-shape cavity have been carried out in this study. Computation is performed using the alternate direct ... -
Optimized Laminar Axisymmetrical Nozzle Design Using a Numerically Validated Thwaites Method
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents the Thwaites method as an accurate and efficient design tool for laminar, axisymmetrical nozzles. Based on historical developments, it is improved to describe internal flows ... -
Three Dimensional Film Stability and Draw Resonance
(The American Society of Mechanical Engineers (ASME), 2012)In order to understand the effects of inertia and gravity on draw resonance and on the physical mechanism of draw resonance in three-dimensional Newtonian film casting, a linear stability ... -
A Numerical Investigation on Dynamics and Breakup of Liquid Sheet
(The American Society of Mechanical Engineers (ASME), 2012)The details on dynamics and breakup processes of liquid sheets are numerically investigated by considering two liquid sheet arrangements: the contraction of liquid sheet in a still quiescent gas ... -
An Algorithm for Determining Volume Fractions in Two-Phase Liquid Flows by Measuring Sound Speed
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents a method of determining the volume fractions of two liquid components in a two-phase flow by measuring the speed of sound through the composite fluid and the instantaneous ... -
Comparison of Partially Averaged Navier–Stokes and Large-Eddy Simulations of the Flow Around a Cuboid Influenced by Crosswind
(The American Society of Mechanical Engineers (ASME), 2012)Th e paper presents a partially averaged Navier–Stokes (PANS) simulation of the flow around a cuboid influenced by crosswind. The results of the PANS prediction are validated against experimental ... -
Flow Visualization and Frequency Characteristics of Velocity Fluctuations of Complex Turbulent Flow in a Short Elbow Piping Under High Reynolds Number Condition
(The American Society of Mechanical Engineers (ASME), 2012)Flow visualization was performed on a single short elbow piping by means of two-dimensional particle image velocimetry. The piping was designed as a 1/7-scale model of a section of the cold-leg ... -
Investigating the Cause of Computational Fluid Dynamics Deficiencies in Accurately Predicting the Efficiency and Performance of High Pressure Turbines: A Combined Experimental and Numerical Study
(The American Society of Mechanical Engineers (ASME), 2012)Despite the tremendous progress over the past three decades in the area of turbomachinery computational fluid dynamics, there are still substantial differences between the experimental and the ... -
Numerical Prediction of Unsteady Pressure Field Within the Whole Flow Passage of a Radial Single-Blade Pump
(The American Society of Mechanical Engineers (ASME), 2012)In this paper, the periodically unsteady pressure field caused by rotor-stator interaction has been investigated numerically by computational fluid dynamics (CFD) calculation to evaluate the transient ... -
Experimental Investigation of Draft Tube Inlet Velocity Field of a Propeller Turbine
(The American Society of Mechanical Engineers (ASME), 2012)The draft tube of reaction hydraulic turbines is subject to numerous investigations since it accounts for a significant portion of the energy recovery. But even with up-to-date computational ... -
Force on a Small Particle Attached to a Plane Wall in a Hiemenz Straining Flow
(The American Society of Mechanical Engineers (ASME), 2012)The force acting on a spherical particle fixed to a wall and immersed in an axisymmetric straining flow is examined for small Reynolds numbers. The steady, incompressible flow field is computed ... -
Flow in a Single Stage Centrifugal Fan With Vaneless Diffuser and Peripheral Louver Outlets
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents an analysis on the air flows in a single stage centrifugal fan with a vaneless diffuser and peripheral louver outlets. The performance data of the fan are obtained ... -
Thermo-Wetting and Friction Reduction Characterization of Microtextured Superhydrophobic Surfaces
(The American Society of Mechanical Engineers (ASME), 2012)Microtextured superhydrophobic surfaces have shown potential in friction reduction applications and could be poised to make a significant impact in thermal management applications. The purpose of ... -
Stability Limits of Reversible-Pump Turbines in Turbine Mode of Operation and Measurements of Unstable Characteristics
(The American Society of Mechanical Engineers (ASME), 2012)Measurements have been performed on a reversible-pump turbine model installed in a closed loop conduit system. The characteristics of the unstable pump turbine in turbine mode show a hysteresis ... -
Modeling and Predicting Gas-Solid Fluidized Bed Dynamics to Capture Nonuniform Inlet Conditions
(The American Society of Mechanical Engineers (ASME), 2012)The hydrodynamics of fluidized beds involving gas-solids interactions are very complex, and modeling such a system using computational fluid dynamics (CFD) modeling is even more challenging for ... -
Electroosmotic Flow Through a Circular Tube With Slip-Stick Striped Wall
(The American Society of Mechanical Engineers (ASME), 2012)This is an analytical study on electrohydrodynamic flows through a circular tube, of which the wall is micropatterned with a periodic array of longitudinal or transverse slip-stick stripes. One ... -
Passive Control of Transonic Cavity Aeroacoustics
(The American Society of Mechanical Engineers (ASME), 2012)In recent years the continuing trend for the internalization of stores within an aircraft fuselage has led to a renewed interest in the field of cavity aeroacoustics. Open cavities exposed to ... -
Second Law Characterization of Confined Turbulent Flows
(The American Society of Mechanical Engineers (ASME), 2012)In this paper, a new measurement technique for turbulent entropy production is developed and applied to confined channel flows. Past methods of dimensional analysis, Clark gradient, and Smagorinsky ... -
The Effect of Air Injection Method on the Airlift Pump Performance
(The American Society of Mechanical Engineers (ASME), 2012)With simple structure, excellent reliability, low cost, no restriction at depth of water, and easy control and operation, airlift pumps have special advantage in borehole hydraulic jet mining, ... -
Microfluidic System for Rapid Enumeration and Detection of Microparticles
(The American Society of Mechanical Engineers (ASME), 2012)A microfluidic system for rapid concentration, enumeration, and size based detection of microparticles is presented. The system includes a micro flow cytometer chip together with fluidics, optics ...