Journal of Fluids Engineering: Recent submissions
Now showing items 2361-2380 of 9024
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Numerical and Experimental Study of a Ventilated Supercavitating Vehicle
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, the ventilated supercavities are studied both numerically and experimentally. A slender rod is considered as the solid body which has a sharp edged disk at the nose as a cavitator and special ports for air ... -
Study of the Cavitating Instability on a Grooved Venturi Profile
(The American Society of Mechanical Engineers (ASME), 2014)Instabilities of a partial cavity developed on a hydrofoil, a convergingdiverging step, or in an interblade channel have already been investigated in many previous works. The aim of this study is to evaluate a passive ... -
On the Computational Modeling of Unfluidized and Fluidized Bed Dynamics
(The American Society of Mechanical Engineers (ASME), 2014)Two factors of great importance when considering gas–solid fluidized bed dynamics are pressure drop and void fraction, which is the volume fraction of the gas phase. It is, of course, possible to obtain pressure drop and ... -
Numerical and Theoretical Investigations of Flow in a Microcone and Plate Viscometer
(The American Society of Mechanical Engineers (ASME), 2014)The slip flow of fluid in a microconeplate viscometer has been considered. The firstorder slip boundary condition is applied. A slip flow primary solution corresponding to unidirectional flow has been obtained. By ignoring ... -
Drag Reducing Flows in Laminar Turbulent Transition Region
(The American Society of Mechanical Engineers (ASME), 2014)This study makes an attempt to investigate Newtonian/nonNewtonian pipe flows in a laminarturbulent transition region, which is an extraordinarily complicated process and is not fully understood. The key characteristic of ... -
Structure Analysis of a Low Reynolds Number Turbulent Submerged Jet Interacting With a Free Surface
(The American Society of Mechanical Engineers (ASME), 2014)In this study, the spatial structures of a submerged turbulent jet interacting with a free surface were investigated experimentally. The jet axis was located at three different depths (H/D = 2, H/D = 4 and H/D = 6) ... -
Computational Fluid Dynamics Study of the Effect of Leg Position on Cyclist Aerodynamic Drag
(The American Society of Mechanical Engineers (ASME), 2014)An experimental and numerical analysis of cycling aerodynamics is presented. The cyclist is modeled experimentally by a mannequin at static crank angle; numerically, the cyclist is modeled using a computer aided design ... -
Analytical Study of Cavitation Surge in a Hydraulic System
(The American Society of Mechanical Engineers (ASME), 2014)In order to clarify effects of an accumulator, pipe lengths and gradients of pressure and suction performances on cavitation surge, onedimensional stability analyses of cavitation surge were performed in hydraulic systems ... -
Cyclic Breathing Simulations in Large Scale Models of the Lung Airway From the Oronasal Opening to the Terminal Bronchioles
(The American Society of Mechanical Engineers (ASME), 2014)Computational fluid dynamics (CFD) simulations were performed using largescale models of the human lung airway and unsteady periodic breathing conditions. The computational domain included fully coupled representations of ... -
Numerical Study of Turbulent Confined Jets Impinging on a Heated Substrate for Thin Film Deposition
(The American Society of Mechanical Engineers (ASME), 2014)This paper reports on the study of confined jets and jets interaction in terms of increasing chemical transport. The context of this study is the atmospheric pressure plasmaenhanced chemical vapor deposition, higher thin ... -
The Tilted Rocket Rig: A Rayleigh–Taylor Test Case for RANS Models1
(The American Society of Mechanical Engineers (ASME), 2014)ReynoldsAveraged Navier–Stokes (RANS) models remain the most common design tool in a wide variety of fluid mixing applications. This includes variabledensity turbulent mixing as occurs in inertial confinement fusion. The ... -
Computational Studies of Two Dimensional Rayleigh Taylor Driven Mixing for a Tilted Rig
(The American Society of Mechanical Engineers (ASME), 2014)A timedependent, incompressible, turbulent mixing problem, referred here to as the “tiltedrig,†is defined, based results from an experiment that involved the introduction of a largescale overturning motion, with a ... -
Counter Current Extraction in Microchannel Flow: Current Status and Perspectives
(The American Society of Mechanical Engineers (ASME), 2014)Liquidliquid extraction is one of the most important unit operations with a broad field of applications. During the past few years, research activities have been increasing in the area of microextraction due to the evident ... -
Laser Doppler Velocimetry Measurements in Turbulent Gaseous Mixing Induced by the Richtmyer–Meshkov Instability: Statistical Convergence Issues and Turbulence Quantification
(The American Society of Mechanical Engineers (ASME), 2014)A statistical characterization of the turbulent flow produced in a vertical shock tube dedicated to the study of the Richtmyer–Meshkov instability (RMI) is carried out using laser Doppler velocimetry (LDV), timeresolved ... -
A Hybrid Compressible–Incompressible Computational Fluid Dynamics Method for Richtmyer–Meshkov Mixing
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents a hybrid compressible–incompressible approach for simulating the Richtmyer–Meshkov instability (RMI) and associated mixing. The proposed numerical approach aims to circumvent the numerical deficiencies ... -
Turbulent Transport at High Reynolds Numbers in an Inertial Confinement Fusion Context
(The American Society of Mechanical Engineers (ASME), 2014)Mix is a critical input to hydro simulations used in modeling chemical or nuclear reaction processes in fluids. It has been identified as a possible cause of performance degradation in inertial confinement fusion (ICF) ... -
An Investigation Into Nonlinear Growth Rate of Two Dimensional and Three Dimensional Single Mode Richtmyer–Meshkov Instability Using an Arbitrary Lagrangian–Eulerian Algorithm
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents an investigation into the use of a moving mesh algorithm for solving unsteady turbulent mixing problems. The growth of a shock induced mixing zone following reshock, using an initial setup comparable ... -
Study of the Reynolds Number Effect on the Process of Instability Transition Into the Turbulent Stage
(The American Society of Mechanical Engineers (ASME), 2014)The results of the experimental study of the Reynolds number effect on the process of the Rayleigh–Taylor (RT) instability transition into the turbulent stage are presented. The experimental liquid layer was accelerated ... -
On the Evolution of Double Shock Accelerated Elliptic Gas Cylinders
(The American Society of Mechanical Engineers (ASME), 2014)The evolution of double elliptic heavygas (SF6) cylinders impacted by a planar shock wave is studied by highspeed camera diagnostics. The minor axes (b) of the elliptic cross sections are aligned perpendicular to the shock ... -
Planar Shock Focusing Through Perfect Gas Lens: First Experimental Demonstration
(The American Society of Mechanical Engineers (ASME), 2014)When a shock wave crosses an interface between two materials, this interface becomes unstable and the Richtmyer–Meshkov instability develops. Such instability has been extensively studied in the planar case, and numerous ...