Journal of Fluids Engineering: Recent submissions
Now showing items 5941-5960 of 9024
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Unsteady Flowfield and Torque Predictions During the Rotation of the Guidevanes of Hydraulic Turbine
(The American Society of Mechanical Engineers (ASME), 1995)In the present work, the numerical prediction of the steady as well as of the unsteady flowfield through the cascade of guidevanes of a reaction turbine is examined. The unsteadiness of the ... -
Structural Parameters and Prediction of Adverse Pressure Gradient Turbulent Flows: An Improved k-ε Model
(The American Society of Mechanical Engineers (ASME), 1995)A modified k-ε model is proposed to predict complex, adverse pressure gradient, turbulent diffuser flows. The need for an eddy viscosity is eliminated by using three structural parameters. A ... -
Structure of Turbulence in an Incipient-Separating Axisymmetric Flow
(The American Society of Mechanical Engineers (ASME), 1995)The relative intensity, skewness, and flatness of fluctuating streamwise velocity along the centerline of an 8 deg included angle conical diffuser show dramatic rapid growth in the final stages ... -
Parallel Pipelining
(The American Society of Mechanical Engineers (ASME), 1995)In this paper we introduce the idea of parallel pipelining for water lubricated transportation of oil (or other viscous material). A parallel system can have major advantages over a single ... -
Experimental Investigation of the Flow Inside a Water Model of a Gas Turbine Combustor: Part 1—Mean and Turbulent Flowfield
(The American Society of Mechanical Engineers (ASME), 1995)The present study examines the flow inside the water model of a gas turbine combustor, with the two main objectives of increasing the understanding of this type of flow and providing experimental ... -
Vorticity Transport Analysis of Turbulent Flows
(The American Society of Mechanical Engineers (ASME), 1995)Turbulence closure for the Reynolds averaged Navier-Stokes equations based on vorticity transport theory is investigated. General expressions for the vorticity transport correlation terms in arbitrary ... -
A Modified Low-Reynolds-Number Turbulence Model Applicable to Recirculating Flow in Pipe Expansion
(The American Society of Mechanical Engineers (ASME), 1995)A modified low-Reynolds-number k-ε turbulence model is developed in this work. The performance of the proposed model is assessed through testing with fully developed pipe flows and recirculating ... -
Calculation of Numerical Uncertainty Using Richardson Extrapolation: Application to Some Simple Turbulent Flow Calculations
(The American Society of Mechanical Engineers (ASME), 1995)Richardson extrapolation has been applied to turbulent pipe flow and turbulent flow past a backward facing step. A commercial CFD code is used for this purpose. It is found that the application ... -
Experimental Study of a Laminar Jet in a Double-Diffusion Environment
(The American Society of Mechanical Engineers (ASME), 1995)An experimental analysis of the flow development caused by the simultaneous injection and withdrawal of a buoyant fluid layer with low Reynolds number in a double-diffusion environment is ... -
Flow Distribution and Pressure Drop in Diffuser-Monolith Flows
(The American Society of Mechanical Engineers (ASME), 1995)Most current automotive catalytic converters use diffusers to distribute the flow field inside the monolithic bricks where catalysis takes place. While the characteristics and performance of a ... -
Turbulent Vortex Ring/Free Surface Interaction
(The American Society of Mechanical Engineers (ASME), 1995)The interaction of turbulent vortex rings that approach a clean water surface under various angles is experimentally investigated. The temporal evolution of the vortex rings with an initial ... -
The Effect of Surfactants on the Wave Growth and Transition to Slug Flow
(The American Society of Mechanical Engineers (ASME), 1995)In this work the effect of the surfactants on the wave growth is investigated analytically and experimentally. It is found that short waves are damped by surfactants quite effectively and since ... -
Effect of Reynolds Number on Isotropic Turbulent Dispersion
(The American Society of Mechanical Engineers (ASME), 1995)The influence of the spatio-temporal structure of isotropic turbulence on the dispersion of fluid and particles with inertia is investigated. The spatial structure is represented by an extended ... -
The Vortical Structure of Parasitic Capillary Waves
(The American Society of Mechanical Engineers (ASME), 1995)A two-dimensional numerical simulation of the parasitic capillary waves that form on a 5 cm gravity-capillary wave is performed. A robust numerical algorithm is developed to simulate flows with ... -
Quantitative Visualization of a Submerged Pseudoplastic Jet Using Particle Image Velocimetry
(The American Society of Mechanical Engineers (ASME), 1995)A preliminary experimental study of a pseudoplastic jet flow is reported in this paper. The velocity field was measured using Particle Image Velocimetry. Unlike a Newtonian jet, the pseudoplastic ... -
Interaction of Transient Waves With a Circular Surface-Piercing Body
(The American Society of Mechanical Engineers (ASME), 1995)A pseudo-spectral formulation for solving unsteady, three-dimensional fluid motion with a free surface in cylindrical coordinates is presented. An effective method for treating the Laplace equation, ... -
Deformation Process of a Water Droplet Impinging on a Solid Surface
(The American Society of Mechanical Engineers (ASME), 1995)This paper is concerned with numerical simulations of the deformation behavior of a liquid droplet impinging on a flat solid surface, as well as the flow field inside the droplet. In the ... -
Theoretical Study of a Laminar Jet in a Double-Diffusion Environment
(The American Society of Mechanical Engineers (ASME), 1995)The flow field development associated with the injection of negatively, neutrally, and positively buoyant fluid layers into a stratified environment was analyzed in this study. The analysis ... -
On the Mechanism of Fluidelastic Instability of a Tube Placed in an Array Subjected to Two-Phase Crossflow
(The American Society of Mechanical Engineers (ASME), 1995)In this work, the fluidelastic instability of a tube placed in an array subjected to two-phase crossflow has been studied. For the determination of fluidelastic instability, acrylic tubes 2.2 ... -
Numerical Simulation of Vertical Forced Plume in a Crossflow of Stably Stratified Fluid
(The American Society of Mechanical Engineers (ASME), 1995)In this study, an investigation using a three-dimensional numerical model, which treats conservation of mass, momentum, and salinity simultaneously, was carried out to study the character of a ...