Journal of Fluids Engineering: Recent submissions
Now showing items 5621-5640 of 9024
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Questions in Fluid Mechanics: Understanding Foams and Foaming
(The American Society of Mechanical Engineers (ASME), 1997) -
New Parameters Describing Extra Straining Effects in Turbulence Models
(The American Society of Mechanical Engineers (ASME), 1997) -
The Effect of Negative Spanwise Rotation on Dean Vortices
(The American Society of Mechanical Engineers (ASME), 1997)A finite-volume numerical analysis is performed to examine effect of spanwise rotation on Dean vortices. The specific problem considered is fully developed flow in a square channel with streamwise ... -
Riser-Relief Valve Dynamic Interactions
(The American Society of Mechanical Engineers (ASME), 1997)The dynamic stability behavior of a typical pilot-operated relief valve has been investigated both numerically and experimentally. The valve piston equation of motion has been solved in connection ... -
Two Types of Nonlinear Pressure-Drop Versus Flow-Rate Relation Observed for Saturated Porous Media
(The American Society of Mechanical Engineers (ASME), 1997)Previous reports of experiments performed with water (Fund et at., 1987 and Kececioglu and Jiang, 1994) indicated that beyond the Forchheimer regime the rate of change of the hydrostatic pressure ... -
The Erosive Axial Collapse of a Cavitating Vortex: An Experimental Study
(The American Society of Mechanical Engineers (ASME), 1997)The erosive efficiency of cavitating vortices is well known, although its exact mechanism has not been clarified. In order to bring fundamental information to the subject, a new device called ... -
Development and Optimization of Screw Machines With a Simulation Model—Part II: Thermodynamic Performance Simulation and Design Optimization
(The American Society of Mechanical Engineers (ASME), 1997)This paper presents a method for the design of twin screw compressors and expanders, which is based on a differential algorithm for defining the rotor profile and an analytical model of the ... -
Experimental Study of Deformation Mechanism of a Water Droplet Impinging on Hot Metallic Surfaces Above the Leidenfrost Temperature
(The American Society of Mechanical Engineers (ASME), 1997)This paper is concerned with the collision dynamics of a water droplet impinging on three kinds of smooth surfaces (Inconel alloy 625, stainless-steel, and silicon) heated to above the Leidenfrost ... -
Tip Clearance and Tip Vortex Cavitation in an Axial Flow Pump
(The American Society of Mechanical Engineers (ASME), 1997)A combined study of tip clearance and tip vortex cavitations in a pump-type rotating machine is presented. Cavitation patterns are observed and cavitation inception is determined for various gap ... -
A Two-Phase Cinematic PIV Method for Bubbly Flows
(The American Society of Mechanical Engineers (ASME), 1997)A cinematic particle image velocimeter (PIV) for measurement of time varying fields in two-phase flow is described. This system has the capability to track detailed characteristics of individual ... -
Development and Optimization of Screw Machines With a Simulation Model—Part I: Profile Generation
(The American Society of Mechanical Engineers (ASME), 1997)This paper presents a method for the design of twin screw compressors and expanders, which is based on a differential algorithm for defining the rotor profiles and an analytical model of the ... -
Prediction of Flow Behavior and Performance of Squirrel-Cage Centrifugal Fans Operating at Medium and High Flow Rates
(The American Society of Mechanical Engineers (ASME), 1997)This paper describes a method for predicting flow behavior and performance for centrifugal fans of the squirrel-cage type. The work is directed at improving under standing of the factors affecting ... -
The Influence of the Regulator Diameter and Injection Nozzle Geometry on the Flow Structure in Pneumatic Dimensional Control Systems
(The American Society of Mechanical Engineers (ASME), 1997)The present paper describes an experimental investigation of the various parameters affecting the operation of industrial pneumatic controllers based on the jet nozzle principle. A test rig was ... -
On the Influence of Liquid Elasticity on Mixing in a Vessel Agitated by a Two-Bladed Impeller
(The American Society of Mechanical Engineers (ASME), 1997)The experimental study of the velocity field and power consumption has been conducted in a mixing vessel equipped with a two-bladed impeller for a viscoelastic fluid and Newtonian and non-Newtonian ... -
A Digital Particle Image Velocimetry Investigation of Flow Field Instabilities of Axial-Flow Impellers
(The American Society of Mechanical Engineers (ASME), 1997)Digital particle image velocimetry (DPIV) has been used to examine the flow field in a vessel agitated by an axial-flow impeller in turbulent operation. Both a pitched-blade turbine and a ... -
Visualization Measurement and Numerical Analysis of Internal Flow in Cross-Flow Fan
(The American Society of Mechanical Engineers (ASME), 1997)Measurements of the internal flow velocity distributions in a cross-flow fan were made by particle-tracking velocimetry (PTV). The flow paths (pathlines) were photographed using a digital camera ... -
Theoretical Study of Pressure Fluctuations Downstream of a Diffuser Pump Impeller—Part 1: Fundamental Analysis on Rotor-Stator Interaction
(The American Society of Mechanical Engineers (ASME), 1997)A theoretical method was developed to calculate the unsteady flow caused by the interaction between impeller and diffuser vanes in a diffuser pump by using the singularity method. The unsteady ... -
Theoretical Study of Pressure Fluctuations Downstream of a Diffuser Pump Impeller—Part 2: Effects of Volute, Flow Rate and Radial Gap
(The American Society of Mechanical Engineers (ASME), 1997)The fundamental analysis in the first report was extended to calculate the unsteady flow induced by the interaction between impeller blades and diffuser vanes/volute casing in a diffuser pump. ... -
Air Entrainment in the Developing Flow Region of Plunging Jets—Part 2: Experimental
(The American Society of Mechanical Engineers (ASME), 1997)When a water jet impinges a pool of water at rest, air bubbles may be entrained and carried away below the pool free surface: this process is called plunging jet entrainment. The study ... -
Numerical Experiments on Application of Richardson Extrapolation With Nonuniform Grids
(The American Society of Mechanical Engineers (ASME), 1997)Some unresolved problems related to Richardson extrapolation (RE) are elucidated via examples, and possible remedies are suggested. The method is applied to the case of turbulent flow past a ...