Journal of Fluids Engineering: Recent submissions
Now showing items 5021-5040 of 9024
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Effect of Slip Velocity and Heat Transfer on the Condensed Phase Momentum Flux of Supersonic Nozzle Flows
(The American Society of Mechanical Engineers (ASME), 2000)One of the methods used for industrial cleansing applications employs a mixture of gaseous nitrogen and liquid water injected upstream of a converging-diverging nozzle located at the end of a ... -
Prediction of the Circumferential Film Thickness Distribution in Horizontal Annular Gas-Liquid Flow
(The American Society of Mechanical Engineers (ASME), 2000)This paper develops a liquid film symmetry correlation and a liquid film thickness distribution model for horizontal annular gas-liquid pipe flows. The symmetry correlation builds on the work ... -
High Pressure Annular Two-Phase Flow in a Narrow Duct: Part I—Local Measurements in the Droplet Field
(The American Society of Mechanical Engineers (ASME), 2000)Detailed measurements have been made in a high pressure, adiabatic (boiled at the inlet) annular flow in a narrow, high aspect ratio duct using a gamma densitometer, hot-film anemometer and ... -
Theoretical Analysis of Cavitation in Inducers With Unequal Blades With Alternate Leading Edge Cutback: Part I—Analytical Methods and the Results for Smaller Amount of Cutback
(The American Society of Mechanical Engineers (ASME), 2000)With the idea of reducing the region of rotating cavitation by cutting back the leading edge of blade alternately and enhancing the stability of alternate blade cavitation, an analysis of ... -
Turbulent Three-Dimensional Air Flow and Trace Gas Distribution in an Inhalation Test Chamber
(The American Society of Mechanical Engineers (ASME), 2000)Steady incompressible turbulent air flow and transient carbon monoxide transport in an empty Rochester-style human exposure chamber have been numerically simulated and compared with experimental ... -
High Pressure Annular Two-Phase Flow in a Narrow Duct: Part II—Three-Field Modeling
(The American Society of Mechanical Engineers (ASME), 2000)This paper outlines the development of a three-field modeling approach in annular flow and the predictive capability of an analysis code. Models have been developed here or adapted from the ... -
A Study of Near-Field Entrainment in Gas Jets and Sprays Under Diesel Conditions
(The American Society of Mechanical Engineers (ASME), 2000)This paper presents a computational study of entrainment characteristics in the near-field of gas jets under atmospheric and Diesel conditions and sprays under Diesel conditions. Computed flowfield ... -
Turbulent Boundary Layers on Surfaces Covered With Filamentous Algae
(The American Society of Mechanical Engineers (ASME), 2000)Turbulent boundary layer measurements have been made on surfaces covered with filamentous marine algae. These experiments were conducted in a closed return water tunnel using a two-component, ... -
Theoretical Analysis of Cavitation in Inducers With Unequal Blades With Alternate Leading Edge Cutback: Part II—Effects of the Amount of Cutback
(The American Society of Mechanical Engineers (ASME), 2000)In Part I, it was found that the alternate blade cutback of the leading edge causes a peculiar behavior in the development of steady cavitation. A stability analysis showed that the alternate ... -
Investigating Three-Dimensional and Rotational Effects on Wind Turbine Blades by Means of a Quasi-3D Navier-Stokes Solver
(The American Society of Mechanical Engineers (ASME), 2000)Three-dimensional and rotational viscous effects on wind turbine blades are investigated by means of a quasi-3D Navier-Stokes model. The governing equations of the model are derived from the 3-D ... -
Aerodynamic Torque of a Butterfly Valve—Influence of an Elbow on the Time-Mean and Instantaneous Aerodynamic Torque
(The American Society of Mechanical Engineers (ASME), 2000)Many technological devices use butterfly valves to control the flow of the process or as safety unit. The principal advantages of this type of valve are their simplicity, their low cost, their ... -
Characteristics of Shallow Turbulent Near Wakes at Low Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2000)The present study deals with the noninvasive measurement of both velocity and concentration in the near region of shallow turbulent wakes using a laser-Doppler anemometer and a video-imaging ... -
Shot Sleeve Wave Dynamics in the Slow Phase of Die Casting Injection
(The American Society of Mechanical Engineers (ASME), 2000)An analysis is carried out on the wave formed during the slow phase of die casting injection processes. Viscous effects are assumed to be negligible and the problem is treated two-dimensionally ... -
A Panel-Fourier Method for Free-Surface Flows
(The American Society of Mechanical Engineers (ASME), 2000)A panel-Fourier method for ship-wave flow problems is considered here. It is based on a three-dimensional potential flow model with a linearized free surface condition, and it is implemented ... -
Toward Improved Rotor-Only Axial Fans—Part I: A Numerically Efficient Aerodynamic Model for Arbitrary Vortex Flow
(The American Society of Mechanical Engineers (ASME), 2000)A numerically efficient mathematical model for the aerodynamics of rotor-only axial fans has been developed. The model is based on a blade-element principle whereby the rotor is divided into a ... -
Evaluation of Blade Passage Analysis Using Coarse Grids
(The American Society of Mechanical Engineers (ASME), 2000)This paper presents the results of a study using coarse grids to analyze the flow in the impellers of an axial flow pump and a mixed flow pump. A commercial CFD code (FLOTRAN) is used to ... -
Toward Improved Rotor-Only Axial Fans—Part II: Design Optimization for Maximum Efficiency
(The American Society of Mechanical Engineers (ASME), 2000)Numerical design optimization of the aerodynamic performance of axial fans is carried out, maximizing the efficiency in a design interval of flow rates. Tip radius, number of blades, and angular ... -
Flow Structure in the Wake of a Rotationally Oscillating Cylinder
(The American Society of Mechanical Engineers (ASME), 2000)The characteristics of the flow in the wake of a circular cylinder performing rotational oscillation about its own axis and placed horizontally in a cross-stream is investigated. The governing ... -
On the Prediction of Axisymmetric Rotating Flows by a One-Equation Turbulence Model
(The American Society of Mechanical Engineers (ASME), 2000)A one-equation model previously tested for parabolic flows and 2-D separated flows was implemented for rotating flows. Flows in rotor-stator disk systems, and in sealed cavities between contrarotating ... -
An Experimental Investigation of the Effect of Freestream Turbulence on the Wake of a Separated Low-Pressure Turbine Blade at Low Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2000)An experimental study was conducted in a two-dimensional linear cascade, focusing on the suction surface of a low pressure turbine blade. Flow Reynolds numbers, based on exit velocity and suction ...