Journal of Fluids Engineering: Recent submissions
Now showing items 4941-4960 of 9024
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Numerical Simulation of Unsteady Turbulent Flow in Axisymmetric Sudden Expansions
(The American Society of Mechanical Engineers (ASME), 2001)This paper is concerned with the numerical simulation of unsteady turbulent flows behind sudden expansions without inlet swirl. Time dependent simulations have been carried out using the VLES ... -
Laminar Flow of a Herschel-Bulkley Fluid Over an Axisymmetric Sudden Expansion
(The American Society of Mechanical Engineers (ASME), 2001)The steady flow of non-Newtonian Herschel-Bulkley fluids over a one-to-two axisymmetric sudden expansion was studied numerically. Finite difference numerical solutions of the governing continuity ... -
Two-Dimensional Study of the Turbulent Wake Behind a Square Cylinder Subject to Uniform Shear
(The American Society of Mechanical Engineers (ASME), 2001)The flow past a square cylinder at a Reynolds number of 20,000 has been simulated through direct calculations and through the calculations using turbulence model. The present investigation ... -
Velocity Measurements of Vortex Breakdown in an Enclosed Cylinder
(The American Society of Mechanical Engineers (ASME), 2001)Experimental measurements were carried out of three-component velocity fields inside a cylindrical container. Flow was driven by the rotation of the top endwall disk. The purpose of the precision ... -
Optimal Feedback Control of Vortex Shedding Using Proper Orthogonal Decomposition Models
(The American Society of Mechanical Engineers (ASME), 2001)This paper treats the question of control of two-dimensional incompressible, unsteady wake flow behind a circular cylinder at Reynolds number Re=100. Two finite-dimensional lower order models based ... -
Dynamic Subgrid-Scale Modeling for Large-Eddy Simulations in Complex Topologies
(The American Society of Mechanical Engineers (ASME), 2001)The dynamic eddy-viscosity relationship is a suitable choice for modeling the subgrid-scales (SGS) in a large-eddy simulation (LES) of complex turbulent flows in irregular domains. This algebraic ... -
LDV Measurement of Confined Parallel Jet Mixing
(The American Society of Mechanical Engineers (ASME), 2001)Laser Doppler Velocimetry (LDV) measurements were taken in a confinement, bounded by two parallel walls, into which issues a row of parallel jets. Two-component measurements were taken of two ... -
Comparison of Different Subgrid-Scale Models of Large Eddy Simulation for Indoor Airflow Modeling
(The American Society of Mechanical Engineers (ASME), 2001)The Smagorinsky subgrid-scale model, a dynamic subgrid-scale model, and a stimulated subgrid-scale model have been used in a large eddy simulation (LES) program to compute airflow in a room. A ... -
Studies on a Horizontal Axis Wind Turbine With Passive Pitch-Flap Mechanism (Performance and Flow Analysis Around Wind Turbine)
(The American Society of Mechanical Engineers (ASME), 2001)This paper describes the development of a passive system to control the output power of a horizontal axis wind turbine. This pitch-flap coupling mechanism can reduce rotor power above rated ... -
Impeller Geometry Suitable for Mini Turbo-Pump
(The American Society of Mechanical Engineers (ASME), 2001)The objective of the present study is to investigate the suitable impeller geometry for a mini turbo-pump, which is defined as the size having impeller diameter between around 5 mm and 50 ... -
Passive Control of Rotating Stall in a Parallel-Wall Vaned Diffuser by J-Grooves
(The American Society of Mechanical Engineers (ASME), 2001)In order to control and suppress instabilities caused by swirl flow, the authors have proposed a very simple passive method utilizing shallow grooves mounted on a casing wall or diffuser wall(s) ... -
On Cross-Flow Fan Similarity: Effects of Casing Shape
(The American Society of Mechanical Engineers (ASME), 2001)The limited number of experimental investigations on similarity operation in the literature is not sufficient to state the validity of similarity laws for cross-flow fans. This is also due to ... -
Performance Characteristics of a Centrifugal Pump Impeller With Running Tip Clearance Pumping Solid-Liquid Mixtures
(The American Society of Mechanical Engineers (ASME), 2001)This paper presents extensive results on the performance of an unshrouded centrifugal pump impeller handling solid-liquid mixtures. The effect of the clearance between the impeller tip and the ... -
Open Channel Boundary Layer Relaxation Behind a Forward Facing Step at Low Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2001)This paper reports laser-Doppler anemometer measurements of mean velocity and turbulence statistics upstream and downstream of a 3-mm forward facing step in a shallow open channel flow. The ... -
Linear and Nonlinear PSE for Stability Analysis of the Blasius Boundary Layer Using Compact Scheme
(The American Society of Mechanical Engineers (ASME), 2001)A highly accurate finite-difference PSE code has been developed to investigate the stability analysis of incompressible boundary layers over a flat plate. The PSE equations are derived in terms ... -
A Numerical Investigation on the Development of an Embedded Streamwise Vortex in a Turbulent Boundary Layer With Spanwise Pressure Gradient
(The American Society of Mechanical Engineers (ASME), 2001)It is the aim of this article to investigate numerically the effects of spanwise pressure gradient on an embedded streamwise vortex in a turbulent boundary layer. The governing equations were ... -
Effects of Bulk Flow Pulsations on Phase-Averaged and Time-Averaged Film-Cooled Boundary Layer Flow Structure
(The American Society of Mechanical Engineers (ASME), 2001)Flow structure in boundary layers film cooled from a single row of round, simple angle holes, and subject to bulk flow pulsations, is investigated, including phase-averaged streamwise velocity ... -
Correlations of Critical Froude Number for Annular-Rimming Flow in Rotating Heat Pipes
(The American Society of Mechanical Engineers (ASME), 2001)The behavior of flow within a rotating finite length cylinder has been investigated. For low rotational speeds, the flow is characterized by a non-uniform thickness i.e., rimming flow. Above a ... -
Three-Dimensional Swirl Flow Velocity-Field Reconstruction Using a Neural Network With Radial Basis Functions
(The American Society of Mechanical Engineers (ASME), 2001)For many studies, knowledge of continuous evolution of hydrodynamic characteristics is useful but generally measurement techniques provide only discrete information. In the case of complex flows, ... -
Erratum: “Computation of Particle and Scalar Transport for Complex Geometry Turbulent Flows” [ASME J. Fluids Engineering, 123, No. 2, pp. 372–381]
(The American Society of Mechanical Engineers (ASME), 2001)In the above paper, Table 2 was printed incorrectly. The correct Table 2 appears below.