Journal of Fluids Engineering: Recent submissions
Now showing items 3521-3540 of 9024
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Experimental Evidence of Hydroacoustic Pressure Waves in a Francis Turbine Elbow Draft Tube for Low Discharge Conditions
(The American Society of Mechanical Engineers (ASME), 2009)The complex three-dimensional unsteady flow developing in the draft tube of a Francis turbine is responsible for pressure fluctuations, which could prevent the whole hydropower plant from operating ... -
Aerodynamic Performance of Blade Tip End-Plates Designed for Low-Noise Operation in Axial Flow Fans
(The American Society of Mechanical Engineers (ASME), 2009)This study assesses the effectiveness of modified blade-tip configurations in achieving passive noise control in industrial fans. The concepts developed here, which are based on the addition of ... -
An Efficient Quasi-2D Simulation of Waterhammer in Complex Pipe Systems
(The American Society of Mechanical Engineers (ASME), 2009)An efficient quasi-2D numerical waterhammer model for turbulent waterhammer flows has been previously developed for a single pipe system (reservoir-pipe-valve system). Basic boundary conditions, ... -
Joint Computational/Experimental Aerodynamic Study of a Simplified Tractor/Trailer Geometry
(The American Society of Mechanical Engineers (ASME), 2009)Steady-state Reynolds averaged Navier–Stokes (RANS) simulations are presented for the three-dimensional flow over a generic tractor trailer placed in the Auburn University 3×4 ft2 suction wind ... -
Impact of Orifice Length/Diameter Ratio on 90 deg Sharp-Edge Orifice Flow With Manifold Passage Cross Flow
(The American Society of Mechanical Engineers (ASME), 2009)The available information describing the various stages of flow conditions that occur as the flow transitions from noncavitation to cavitation (turbulent flow), supercavitation, and finally separation ... -
An Experimental Investigation of the Flowfield and Dust Resuspension Due to Idealized Human Walking
(The American Society of Mechanical Engineers (ASME), 2009)In order to address how human foot movement causes particles to be resuspended from the floor, particle flow visualization and particle image velocimetry (PIV) measurements were performed on a ... -
Modeling of Pumping Performance of Labyrinth Screw Pump (LSP) by 2D Reynolds Stress Equations
(The American Society of Mechanical Engineers (ASME), 2009)By using Prandtl’s mixing length theory to model two-dimensional Reynolds stress equations, the pumping performance of a labyrinth screw pump (LSP) is studied and several key parameters are ... -
Transition of Bubbly Flow in Vertical Tubes: New Criteria Through CFD Simulation
(The American Society of Mechanical Engineers (ASME), 2009)The two fluid model is used to simulate upward gas-liquid bubbly flow through a vertical conduit. Coalescence and breakup of bubbles have been accounted for by embedding the population balance ... -
Transition of Bubbly Flow in Vertical Tubes: Effect of Bubble Size and Tube Diameter
(The American Society of Mechanical Engineers (ASME), 2009)In a companion paper (“Modelling Bubbly Flow by Population Balance Technique Part I: Axial Flow Development and Its Transitions,” ASME J. Fluids Eng), a two fluid model along with a multiclass ... -
Analytical Solution for Newtonian Laminar Flow Through the Concave and Convex Ducts
(The American Society of Mechanical Engineers (ASME), 2009)In this paper, the motion equation for steady state, laminar, fully developed flow of Newtonian fluid through the concave and convex ducts has been solved both numerically and analytically. ... -
Pharyngeal Airflow Analysis in Obstructive Sleep Apnea Patients Pre- and Post-Maxillomandibular Advancement Surgery
(The American Society of Mechanical Engineers (ASME), 2009)The purpose of this study was to evaluate pharyngeal airflow in obstructive sleep apnea (OSA) patients following maxillomandibular advancement (MMA) surgery using computational fluid dynamics (CFD). ... -
Large-Eddy Simulation of Wake and Boundary Layer Interactions Behind a Circular Cylinder
(The American Society of Mechanical Engineers (ASME), 2009)Large-eddy simulations (LESs) of flow past a circular cylinder in the vicinity of a flat plate have been carried out for three different gap-to-diameter (G/D) ratios of 0.25, 0.5, and 1.0 ... -
Circulation Generation and Vortex Ring Formation by Conic Nozzles
(The American Society of Mechanical Engineers (ASME), 2009)Vortex rings are one of the fundamental flow structures in nature. In this paper, the generation of circulation and vortex rings by a vortex generator with a static converging conic nozzle ... -
On the Pulsed and Transitional Behavior of an Electrified Fluid Interface
(The American Society of Mechanical Engineers (ASME), 2009)Transient modes of an electrified fluid interface are investigated, specifically, (a) intermittent or pulsed cone-jet mode and (b) smooth and abrupt transitions of the interface in response to ... -
Thermodynamic Effect on Rotating Cavitation in an Inducer
(The American Society of Mechanical Engineers (ASME), 2009)Cavitation in cryogenic fluids has a thermodynamic effect because of the thermal imbalance around the cavity. It improves cavitation performances in turbomachines due to the delay of cavity ... -
Curved Non-Newtonian Liquid Jets With Surfactants
(The American Society of Mechanical Engineers (ASME), 2009)Applications of the breakup of a liquid jet into droplets are common in a variety of different industrial and engineering processes. One such process is industrial prilling, where small spherical ... -
Measurements of High Velocity Gradient Flow Using Bubble Tracers in a Cavitation Tunnel
(The American Society of Mechanical Engineers (ASME), 2009)The objective of the present study is to investigate propeller wake using particle image velocimetry (PIV) technique with bubble type of tracers, naturally generated by the decrease in the ... -
Flow Characteristics in a Curved Rectangular Channel With Variable Cross-Sectional Area
(The American Society of Mechanical Engineers (ASME), 2009)Laminar air flow through a curved rectangular channel with a variable cross-sectional (c/s) area (diverging-converging channel) is computationally investigated. Such a flow passage is formed between ... -
Measurements of a Wall Jet Impinging Onto a Forward Facing Step
(The American Society of Mechanical Engineers (ASME), 2009)This study examines a horizontal wall jet impinging onto a forward facing vertical step in a cross-flow. Planar laser induced fluorescence (PLIF) experiments in a 68×40 mm2 water channel ... -
Experimental Investigation of Vortex-Induced Vibration in One and Two Dimensions With Variable Mass, Damping, and Reynolds Number
(The American Society of Mechanical Engineers (ASME), 2009)Measurements are made of vortex-induced vibration of an elastically supported circular cylinder in water with reduced velocity (U/fnD) from 2 to 12, damping factors (ζ) from 0.2% to 40% of ...