Journal of Fluids Engineering: Recent submissions
Now showing items 4961-4980 of 9024
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Numerical Study of Pressure Fluctuations Caused by Impeller-Diffuser Interaction in a Diffuser Pump Stage
(The American Society of Mechanical Engineers (ASME), 2001)Two-dimensional and three-dimensional, unsteady state Reynolds-averaged Navier-Stokes (RANS) equations with standard k-ε turbulence models were solved within an entire stage of a diffuser pump to ... -
Recent Mathematical Models for Turbulent Flow in Saturated Rigid Porous Media
(The American Society of Mechanical Engineers (ASME), 2001)Turbulence models proposed for flow through permeable structures depend on the order of application of time and volume average operators. Two developed methodologies, following the two orders of ... -
A Numerical Investigation on the Volute/Diffuser Interaction Due to the Axial Distortion at the Impeller Exit
(The American Society of Mechanical Engineers (ASME), 2001) -
Alternative Models of Turbulence in a Porous Medium, and Related Matters
(The American Society of Mechanical Engineers (ASME), 2001)Recently published papers involving two distinct models of turbulence in a porous medium are discussed, together with related matters including inertial effects, lateral momentum transfer and ... -
On the Mathematical Description and Simulation of Turbulent Flow in a Porous Medium Formed by an Array of Elliptic Rods
(The American Society of Mechanical Engineers (ASME), 2001)Many engineering and environmental system analyses can benefit from appropriate modeling of turbulent flow in porous media. Through the volumetric averaging of the microscopic transport equations ... -
The Flow Structure During Onset and Developed States of Rotating Stall Within a Vaned Diffuser of a Centrifugal Pump
(The American Society of Mechanical Engineers (ASME), 2001)Particle Image Velocimetry (PIV) and pressure fluctuation measurements are used for investigating the onset and development of rotating stall within a centrifugal pump having a vaned diffuser. ... -
Numerical Investigation of Swirling Flow in Annular Diffusers With a Rotating Hub Installed at the Exit of Hydraulic Machines
(The American Society of Mechanical Engineers (ASME), 2001)A single sweep method for the solution of Navier-Stokes equations is used for numerical investigation of flow in annular diffusers formed by a cylindrical casing and a converging conical hub, ... -
Modified General Equation for the Design of Capillary Tubes
(The American Society of Mechanical Engineers (ASME), 2001)In order to improve the design efficiency of capillary tubes, capillary tube models have been developed. Yilmaz and Ünal presented a general approximate analytic equation for the design of ... -
Developing Film Flow on an Inclined Plane With a Critical Point
(The American Society of Mechanical Engineers (ASME), 2001)Viscous, laminar, gravitationally-driven flow of a thin film on an inclined plane is analyzed for moderate Reynolds number under critical conditions. A previous analysis of film flow utilized a ... -
Stability Criteria of the Steady Flow of a Liquid Containing Bubbles Along a Nozzle
(The American Society of Mechanical Engineers (ASME), 2001)The steady cavitating flow through a converging-diverging nozzle is considered. A continuum model is assumed with the Rayleigh-Plesset equation to account for the bubble dynamics. A similar problem ... -
Transcritical Patterns of Cavitating Flow and Trends of Acoustic Level
(The American Society of Mechanical Engineers (ASME), 2001)Hydroacoustics of the transcritical cavitating flows on a NACA16012 hydrofoil at a 2/5/8-degree angle of attack and axisymmetric bodies with hemispherical and 45-degree conical headforms were ... -
Influence of Unsteady Effects on Air Venting in Pressure Die Casting
(The American Society of Mechanical Engineers (ASME), 2001)The influence of unsteady effects on the evacuation of air through vents in pressure die casting processes is analyzed. A model is proposed which considers the air flow as one-dimensional and ... -
Diffusion-Controlled Dopant Transport During Magnetically-Stabilized Liquid-Encapsulated Czochralski Growth of Compound Semiconductor Crystals
(The American Society of Mechanical Engineers (ASME), 2001)During the magnetically-stabilized liquid-encapsulated Czochralski (MLEC) process, a single compound semiconductor crystal is grown by the solidification of an initially molten semiconductor (melt) ... -
Drag Coefficients of Viscous Spheres at Intermediate and High Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2001)A finite-difference scheme is used to solve the Navier-Stokes equations for the steady flow inside and outside viscous spheres in a fluid of different properties. Hence, the hydrodynamic force ... -
Calculation of Unsteady Flows in Curved Pipes
(The American Society of Mechanical Engineers (ASME), 2001)Highly unsteady three-dimensional flows in curved pipes with significant variation of flow geometry and flow parameters are studied. Using improvements in computational efficiency, detailed knowledge ... -
Dry Patch Stability of Shear Driven Liquid Films
(The American Society of Mechanical Engineers (ASME), 2001)The breakdown of the liquid film at the wall in annular gas-liquid flow may lead to the formation of a stable dry patch. For the case of heat transfer surfaces this causes a hot spot. Dry ... -
Mixing Characteristics of Axisymmetric Free Jets From a Contoured Nozzle, an Orifice Plate and a Pipe
(The American Society of Mechanical Engineers (ASME), 2001)The differences in mixing performance between axisymmetric turbulent jets issuing from three common types of nozzle, viz. a contoured (or smooth contraction) nozzle, a sharp-edged orifice and a ... -
Formation of Air Core in Nozzles With Tangential Entry
(The American Society of Mechanical Engineers (ASME), 2001)The process of formation of air core and its development with time, inside one cylindrical and one conical nozzle having two tangential entries, has been analyzed experimentally and numerically. ... -
Solution Structure and Stability of Viscous Flow in Curved Square Ducts
(The American Society of Mechanical Engineers (ASME), 2001)The bifurcation structure of viscous flow in curved square ducts is studied numerically and the stability of solutions on various solution branches is examined extensively. The solution structure ... -
Micromachined Particle Filter With Low Power Dissipation
(The American Society of Mechanical Engineers (ASME), 2001)Microfilters for collecting micron-size airborne biological agents are designed and fabricated using a micro-electro-mechanical-system (MEMS) fabrication technology. The thickness of the microfilter ...