Journal of Fluids Engineering: Recent submissions
Now showing items 6981-7000 of 9024
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Passive Control of Three-Dimensional Separated Vortical Flow Associated With Swept Rearward-Facing Steps
(The American Society of Mechanical Engineers (ASME), 1989)Control of the three-dimensional separated-flow region down-stream of a swept, rearward-facing step has been studied with the purpose of reducing the separated-flow region and attendant drag. ... -
Numerical Computation of Turbulent Flow in a Square-Sectioned 180 Deg Bend
(The American Society of Mechanical Engineers (ASME), 1989)Fine-grid computations are reported of turbulent flow through a square sectioned U-bend corresponding to that for which Chang et al. (1983a) have provided detailed experimental data. A sequence ... -
Effects of Excitation on Turbulence Levels in a Shear Layer
(The American Society of Mechanical Engineers (ASME), 1989) -
Measurements in Vertical Plane Turbulent Plumes
(The American Society of Mechanical Engineers (ASME), 1989)Mean-flow and turbulence measurements have been obtained in two-dimensional vertical turbulent plumes in a nominally still ambient. The plumes were generated by injecting hot water vertically ... -
Studies on Two-Dimensional Curved Nonbuoyant Jets in Cross Flow
(The American Society of Mechanical Engineers (ASME), 1989)An experimental study of two-dimensional, curved, heated (but essentially non-buoyant) jets is reported. The experiments were conducted in a hydraulic flume in which a curved jet was produced ... -
The Effect of Inlet Turbulence Intensity on the Reattachment Process Over a Backward-Facing Step
(The American Society of Mechanical Engineers (ASME), 1989)Behavior of a separated shear layer over a backward-facing step and its reattachment is presented when a two-dimensional cavity or rod is installed upstream of the step in order to change ... -
Effect of 90 Degree Flap on the Aerodynamics of a Two-Element Airfoil
(The American Society of Mechanical Engineers (ASME), 1989)The aerodynamic performance of a two-element airfoil with a 90 deg. trailing edge flap was experimentally investigated. The 5 percent-chord long flap, significantly increased the lift of the ... -
A Modified Van Driest Formula for the Mixing Length of Turbulent Boundary Layers in Pressure Gradients
(The American Society of Mechanical Engineers (ASME), 1989)A modified van Driest formula is proposed for the mixing length of turbulent boundary layers in pressure gradients. The slope and intercept of the logarithmic similarity law are satisfied ... -
Stability of the Flow Between Rotating Cylinders—Wide-Gap Problem
(The American Society of Mechanical Engineers (ASME), 1989) -
Development of Rotational Speed Control Systems for a Savonius-Type Wind Turbine
(The American Society of Mechanical Engineers (ASME), 1989)An attempt is made here to increase the output of a Savonius rotor by using a flow deflecting plate. When the deflecting plate is located at the optimum position, the rotor power increases ... -
A Multi-Sensor Hot-Wire Probe to Measure Vorticity and Velocity in Turbulent Flows
(The American Society of Mechanical Engineers (ASME), 1989)The design and construction of a miniature hot-wire probe capable of simultaneously measuring all components of the velocity and vorticity vectors in turbulent flows are presented. A brief ... -
The Correction of X-Probe Results for Transverse Contamination
(The American Society of Mechanical Engineers (ASME), 1989)This note discusses the interpretation of X-probe measurements obtained in the presence of significant velocities transverse to the plane of the wires. To measure the three mean velocity components, ... -
A Useful Approximation to the Error Function: Applications to Mass, Momentum, and Energy Transport in Shear Layers
(The American Society of Mechanical Engineers (ASME), 1989)Specific mass, momentum, and energy flux transport integrals are given by the sequence I1 = ∫erfc(x)dx, I2 = ∫erfc2 (x)dx, and I3 = ∫erfc3 (x)dx for the error function velocity distribution ... -
The Drag Coefficient of a Sphere in a Square Channel
(The American Society of Mechanical Engineers (ASME), 1989) -
A Note of Caution and Apology
(The American Society of Mechanical Engineers (ASME), 1989) -
Computational Methods With Vortices—The 1988 Freeman Scholar Lecture
(The American Society of Mechanical Engineers (ASME), 1989)A comprehensive review is presented of the computational methods based upon Helmholtz’s powerful concepts of vortex dynamics, making use of Lagrangian or mixed Lagrangian-Eulerian schemes, the ... -
Tip Vortex Cavitation Inhibition by Drag-Reducing Polymer Solutions
(The American Society of Mechanical Engineers (ASME), 1989)This paper presents previous and recent results obtained by the authors concerning the modification of the tip vortex cavitation of a finite span hydrofoil by drag-reducing polymer solutions. ... -
Application of Computer Modeling in the Design of a Multiphase Flow Metering System
(The American Society of Mechanical Engineers (ASME), 1989)Two numerical models (CONVAS and PSI-Cell) for analyzing steady non-equilibrium gas-particle flow through a venturi and an orifice plate are discussed. These models are validated by comparing the ... -
Unsteady Structure Measurement of Cloud Cavitation on a Foil Section Using Conditional Sampling Technique
(The American Society of Mechanical Engineers (ASME), 1989)The structure of flow around unsteady cloud cavitation on a stationary two-dimensional hydrofoil was investigated experimentally using a conditional sampling technique. The unsteady flow velocity ... -
Check Valve Behavior Under Transient Flow Conditions: A State-of-the-Art Review
(The American Society of Mechanical Engineers (ASME), 1989)Recent advances in the understanding of check valve behavior are reviewed. It is evident that the basis now exists for providing reliable information on valve dynamics that is in a form that ...