Journal of Fluids Engineering: Recent submissions
Now showing items 2481-2500 of 9024
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Three Dimensional Viscous Potential Electrohydrodynamic Kelvin–Helmholtz Instability Through Vertical Cylindrical Porous Inclusions With Permeable Boundaries
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, the electrohydrodynamic threedimensional Kelvin–Helmholtz instability of a cylindrical interface with heat and mass transfer between liquid and vapor phases is studied. The liquid and the vapor are saturated, ... -
Model for Predicting Drag Torque in Open Multi Disks Wet Clutches
(The American Society of Mechanical Engineers (ASME), 2014)A mathematical model based on continuity and NavierStokes equations, considering laminar flow in the gap between the disks, is presented to estimate the drag torque in open multidisks wet clutches. By taking into account ... -
Multiobjective Optimization Design of a Pump–Turbine Impeller Based on an Inverse Design Using a Combination Optimization Strategy
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents an automatic multiobjective hydrodynamic optimization strategy for pump–turbine impellers. In the strategy, the blade shape is parameterized based on the blade loading distribution using an inverse ... -
Automotive Application of Vortex Generators in Ground Effect
(The American Society of Mechanical Engineers (ASME), 2014)Vortex generators (VG) are widely used in the aerospace industry, mainly to control boundary layer transition and to delay flow separations. A different type of VG is used on race cars for manipulating the flow over and ... -
Aerodynamic Study of a Tricycle Wheel Subsystem for Drag Reduction
(The American Society of Mechanical Engineers (ASME), 2014)This paper deals with a computational fluid dynamics (CFD) and experimental drag analysis on an isolated rotating wheel subsystem (including its accessories: tire, suspension, Aarms, and fender) of a motor tricycle vehicle ... -
Numerical Modeling and Validation of Supersonic Two Phase Flow of CO2 in Converging Diverging Nozzles
(The American Society of Mechanical Engineers (ASME), 2014)Carbon dioxide is an attractive alternative to conventional refrigerants due to its low direct global warming effects. Unfortunately, CO2 and many alternative refrigerants have lower thermodynamic performance resulting in ... -
Large Eddy Simulation of Coflow Jet Airfoil at High Angle of Attack
(The American Society of Mechanical Engineers (ASME), 2014)Large eddy simulation (LES) is conducted to investigate coflow jet (CFJ) airfoil flows at high angle of attack (AOA). The Smagorinsky model with Van Driest damping is employed to resolve the subgridscale stress. The ... -
Evaluation of RANS Models in Predicting Low Reynolds, Free, Turbulent Round Jet
(The American Society of Mechanical Engineers (ASME), 2014)In order to study the flow behavior of multiple jets, numerical prediction of the threedimensional domain of round jets from the nozzle edge up to the turbulent region is essential. The previous numerical studies on the ... -
Computations of Particle Laden Turbulent Jet Flows Based on Eulerian Model
(The American Society of Mechanical Engineers (ASME), 2014)Numerical simulations using an Eulerian twofluid model were performed for spatially developing, twodimensional, axisymmetric jets issued from a 30mmdiameter circular nozzle. The nozzle was simulated separately for various ... -
Alternative Convolution Approach to Friction in Unsteady Pipe Flow
(The American Society of Mechanical Engineers (ASME), 2014)In this paper some aspects of the unsteady friction in pipe flow expressed by the convolution are analyzed. This additional term introduced into the motion equation involves the accelerations of fluid occurring in the past ... -
Application of a Maneuvering Propulsor Technology to Undersea Vehicles
(The American Society of Mechanical Engineers (ASME), 2014)Previous computational and experimental studies that have demonstrated a method to generate vehicle maneuvering forces from a propulsor alone have been applied to a generic undersea vehicle. An open, preswirl propulsor was ... -
Experimental Research on Velocity Distribution and Attenuation Characteristic of Spiral Flow by Laser Doppler Velocimeter
(The American Society of Mechanical Engineers (ASME), 2014)An experimental study was conducted to get more insight into the flowing characteristics of single phase spiral flow in the horizontal pipe by the use of a laser Doppler velocimeter (LDV). Water was used as the working ... -
New Discharge Coefficient of Throat Tap Nozzle Based on ASME Performance Test Code 6 for Reynolds Number From 2.4 أ— 105 to 1.4 أ— 107
(The American Society of Mechanical Engineers (ASME), 2014)The throat tap nozzle of the American Society of Mechanical Engineers performance test code (ASME PTC) 6 is widely used in engineering fields, and its discharge coefficient is normally estimated by an extrapolation in ... -
Why do Fish Have a “Fish Like Geometry�
(The American Society of Mechanical Engineers (ASME), 2014)Most fish share a common geometry, a streamlined anterior body and a deep caudal fin, connected to each other at a tailbase neck, where the body almost shrinks to a point. This work attempts to explain the reason that fish ... -
Analytical Solution for the Optimal Spacing of Wind Turbines
(The American Society of Mechanical Engineers (ASME), 2014)The lateral and longitudinal spacing between individual turbines in a wind turbine array must be large enough to minimize the wake effects caused by an upstream turbine on those that lie downstream from it. Here, the flow ... -
Forces and Flow Structures on a Simplified Car Model Exposed to an Unsteady Harmonic Crosswind
(The American Society of Mechanical Engineers (ASME), 2014)A ground vehicle traveling along a road is subject to unsteady crosswinds in a number of situations. In windy conditions, for example, the natural atmospheric wind can exhibit strong lateral gusts. Other situations, such ... -
Three Dimensional Numerical Analysis of Turbulent Flow in Porous Media Formed by Periodic Arrays of Cubic, Spherical, or Ellipsoidal Particles
(The American Society of Mechanical Engineers (ASME), 2014)In the present paper, threedimensional (3D) turbulent flow in the porous media formed by periodic arrays of particles is numerically investigated. 3D Navier–Stokes equations and a standard kخµ turbulence model with ... -
Effects of Pulsation to the Mean Field and Vortex Development in a Backward Facing Step Flow
(The American Society of Mechanical Engineers (ASME), 2014)This work is concerned with the behavior of pulsatile flows over a backwardfacing step geometry. The paper mainly focuses on the effects of the pulsation frequency on the vortex development of a 2:1 backwardfacing step for ... -
Discussion: “Flow Investigation in a Francis Turbine” (Fachbach, H., 1971, ASME J. Basic Eng., 93, pp. 525–533)
(The American Society of Mechanical Engineers (ASME), 1971) -
Discussion: “A Prediction of Water-Entry Cavity Shape” (Abelson, H. I., 1971, ASME J. Basic Eng., 93, pp. 501–503)
(The American Society of Mechanical Engineers (ASME), 1971)