Journal of Fluids Engineering: Recent submissions
Now showing items 1981-2000 of 9024
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The Phenomenon of Bubbles Negative Relative Velocity in Vertical Bubbly Jets
(The American Society of Mechanical Engineers (ASME), 2016)Many experiments demonstrate that the bubble relative (slip) velocities in vertical turbulent sheared bubbly flows are significantly lower than those in quiescent infinite fluid. Moreover, vertical bubbly jet experiments ... -
Turbulence Characteristics of Vegetated Channel With Downward Seepage
(The American Society of Mechanical Engineers (ASME), 2016)Experimental studies were carried out for investigating changes in flow characteristics with the presence of flexible vegetation in a channel. The study focuses on the effect of introducing downward seepage on velocity ... -
Correlations of Bubble Diameter and Frequency for Air–Water System Based on Orifice Diameter and Flow Rate
(The American Society of Mechanical Engineers (ASME), 2016)Prediction correlations of air bubble diameter and frequency in stagnant clean water were established. Eleven different orifice diameters were tested under flow rate of 0.05–0.15 SLPM. The resulted bubble size and frequency ... -
Effect of Bubble Inclusions on the Mechanical Properties of Cast Poly-Methyl Metacrylate
(The American Society of Mechanical Engineers (ASME), 1972)Bubble inclusions present in cast acrylic plastic generally degrade the mechanical properties of the material. To evaluate the effect of bubbles on the mechanical strength of acrylic plastic, ... -
The Influence of Retraction on Three Stream Injector Pulsatile Atomization for Air–Water Systems
(The American Society of Mechanical Engineers (ASME), 2016)Although coaxial airblast primary atomization has been studied for decades, relatively little attention has been given to threestream designs; this is especially true for transonic selfpulsating injectors. Herein, the ... -
Experimental and Numerical Investigation of the Precessing Helical Vortex in a Conical Diffuser, With Rotor–Stator Interaction
(The American Society of Mechanical Engineers (ASME), 2016)The flow unsteadiness generated in a swirl apparatus is investigated experimentally and numerically. The swirl apparatus has two parts: a swirl generator and a test section. The swirl generator which includes two blade ... -
Measurement of Viscoelastic Fluid Flow in the Curved Microchannel Using Digital Holographic Microscope and Polarized Camera
(The American Society of Mechanical Engineers (ASME), 2016)This paper aims to develop a threedimensional (3D) measurement approach to investigate the flow structures of viscoelastic fluid in the curved microchannel by using digital holographic microscope (DHM). The measurement ... -
Study of Available Turbulence and Cavitation Models to Reproduce Flow Patterns in Confined Flows
(The American Society of Mechanical Engineers (ASME), 2016)Cavitating flow in nozzles is a complex flow which implies a highly turbulent twophase one. An accurate simulation which improves some numerical results found in the literature was achieved by means of an extensive analysis ... -
On the Ideal Grid Resolution for Two Dimensional Eulerian Modeling of Gas–Liquid Flows
(The American Society of Mechanical Engineers (ASME), 2016)A study was performed to investigate the interesting observation that when using an Eulerian–Eulerian model to simulate a bubble column flow in two dimensions, accuracy did not always increase with increasing grid ... -
Closure Concepts of Large Pressure Vessels
(The American Society of Mechanical Engineers (ASME), 1972)An investigation of the feasibility of fabricating and erecting very large and heavy closure structures for high pressures and in sizes presently considered beyond practical limits. -
Structure of Turbulent Flows Over Forward Facing Steps With Adverse Pressure Gradient
(The American Society of Mechanical Engineers (ASME), 2016)This paper reports an experimental study on the effects of adverse pressure gradient (APG) and Reynolds number on turbulent flows over a forward facing step (FFS) by employing three APGs and three Reynolds numbers. A ... -
Flow Kinematics in Variable Height Rotating Cylinder Arrays
(The American Society of Mechanical Engineers (ASME), 2016)Experimental data are presented for large arrays of rotating, variableheight cylinders in order to study the dependence of the threedimensional mean flows on the height heterogeneity of the array. Elements in the examined ... -
Computational Fluid Dynamics Analysis of Gerotor Lubricating Pumps at High Speed: Geometric Features Influencing the Filling Capability
(The American Society of Mechanical Engineers (ASME), 2016)The paper presents an extensive analysis of the influence on the suction capacity of the main geometric parameters of gerotor lubricating pumps. The study was carried out using a computational fluid dynamics (CFD) model ... -
Experimental Study of Horizontal Bubble Plume With Computational Fluid Dynamics Benchmarking
(The American Society of Mechanical Engineers (ASME), 2016)In order to study the twophase flow behaviors of a horizontal bubble plume in a tank, experimental tests along with computational fluid dynamics (CFD) simulations were carried out in this paper. An experimental facility ... -
A Numerical Investigation on the Onset of the Various Flow Regimes in a Spherical Annulus
(The American Society of Mechanical Engineers (ASME), 2016)The spherical Couette system, consisting of the flow in the annular gap between two concentric rotating spheres, is a convenient problem for studying the laminar–turbulent transition. Many of the transitional phenomena ... -
Large Eddy Simulation of the Rotating Stall in a Pump Turbine Operated in Pumping Mode at a Part Load Condition
(The American Society of Mechanical Engineers (ASME), 2016)The investigation of the rotating stall phenomenon appearing in the HYDRODYNA pumpturbine reduced scale model is carried out by performing a largescale large eddy simulation (LES) computation using a mesh featuring ... -
The Effect of Slip on the Discharge From Partially Filled Circular and Fully Filled Lens and Figure 8 Shaped Pipes
(The American Society of Mechanical Engineers (ASME), 2016)In this work, we examine the effect of wall slip for a gravitydriven flow of a Newtonian fluid in a partially filled circular pipe. An analytical solution is available for the noslip case, while a numerical method is used ... -
Implementation of an Infinite Height Levee in CaFunwave Using an Immersed Boundary Method
(The American Society of Mechanical Engineers (ASME), 2016)Numerical simulations of stormsurge–wave actions on coastal highways and levees are very important research topics for coastal engineering. In a largescale region hydrodynamic model, highways and levees are often complicated ... -
Analysis of Flow Induced Vibration Due to Stratified Wavy Two Phase Flow
(The American Society of Mechanical Engineers (ASME), 2016)Fluctuating force induced by horizontal gas–liquid twophase flow on 90 deg pipe bend at atmospheric pressure condition is considered. Analysis was conducted to develop a model which is capable of predicting the peak ... -
Axial Flutter Effects on the Axisymmetric Turbulent Boundary Layer Along Long Thin Circular Cylinders
(The American Society of Mechanical Engineers (ASME), 2016)Experimental observations of towed sonar arrays as characterized by long thin circular cylinders indicate transverse motions that are clearly identified by lowamplitudes, lowwavelengths, and lowfrequencies. Although the ...