Journal of Fluids Engineering: Recent submissions
Now showing items 6621-6640 of 9024
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The Oscillation of Horseshoe Vortex Systems
(The American Society of Mechanical Engineers (ASME), 1991)The oscillation of horseshoe vortex systems around the base of wall mounted obstacles in the transition range is considered. Existing experimental data from a variety of sources is reanalyzed ... -
Oscillatory Fluid Flow Through a Porous Medium Channel Bounded by Two Impermeable Parallel Plates
(The American Society of Mechanical Engineers (ASME), 1991)In the absence of the inertia effects, the analytic solution to the fully developed oscillatory fluid flow through a porous medium channel bounded by two impermeable parallel plates is presented. ... -
Visualization of the Wing-Tip Vortex in Temporal and Spatial Pressure Gradients
(The American Society of Mechanical Engineers (ASME), 1991)The evolution of the longitudinal vortex in the near field of a rectangular wing has been visualized using smoke and laser light sheet. The smoke photographs have been used to obtain qualitative ... -
Initial Drop Size and Velocity Distributions for Airblast Coaxial Atomizers
(The American Society of Mechanical Engineers (ASME), 1991)Initial drop size and velocity distributions, after complete disintegration of coaxial liquid jets, were determined by phase Doppler measurements. The measured radial distributions of Sauter mean ... -
Computation of Turbulent Flow in a Thin Liquid Layer of Fluid Involving a Hydraulic Jump
(The American Society of Mechanical Engineers (ASME), 1991)Numerically computed flow fields and free surface height distributions are presented for the flow of a thin layer of liquid adjacent to a solid horizontal surface that encounters a hydraulic ... -
Vortex Shedding From a Bluff Body Adjacent to a Plane Sliding Wall
(The American Society of Mechanical Engineers (ASME), 1991)The characteristics of the flow around a bluff body of square cross-section in contact with a solid-wall boundary are investigated numerically using a finite difference procedure. Previous studies ... -
The Performance of Two Butterfly Valves Mounted in Series
(The American Society of Mechanical Engineers (ASME), 1991)The results of an experimental investigation concerning the operating characteristics of two similar butterfly valves mounted in series are reported. Emphasis is given to the influence of the ... -
The Influence of Structural Damping on Internal Pressure During a Transient Pipe Flow
(The American Society of Mechanical Engineers (ASME), 1991)A four equation model of axial wave propagation with Poisson coupling which includes viscous damping to account for structural energy dissipation is evaluated. Comparison of the predictions with ... -
A New Way to Represent Jet Pump Performance
(The American Society of Mechanical Engineers (ASME), 1991)Researchers commonly represent jet pump performance with a Head-Ratio, Flow-Ratio curve (HR/FR curve). Our goals are to show that the HR/FR curve has several problems and to propose a new way ... -
Velocity Profiles for Turbulent Boundary Layers Under Freestream Turbulence
(The American Society of Mechanical Engineers (ASME), 1991)Correlations for changes of skin friction coefficients (Δcf ) and wake parameters (ΔΠ), relative to the low freestream turbulence condition, are presented for the case of turbulent boundary ... -
Oscillating Flow Past a Rigid Circular Cylinder: A Finite-Difference Calculation
(The American Society of Mechanical Engineers (ASME), 1991)A finite-difference study of the sinusoidally oscillating flow past a fixed circular cylinder is made using vorticity and stream function as the dependent variables. Calculations are performed ... -
Anisotropy in a Turbulent Jet Near a Free Surface
(The American Society of Mechanical Engineers (ASME), 1991)Laboratory measurements of the turbulent flow in a plane jet issuing at the free surface are reported and analyzed. Single point hot-film data were obtained for mean velocities and turbulent ... -
A Finite-Element Perturbation Approach to Fluid/Rotor Interaction in Turbomachinery Elements. Part 2: Application
(The American Society of Mechanical Engineers (ASME), 1991)A newly devised perturbation model for the fluid-induced vibration of turbomachinery rotating elements is used to compute the rotordynamic coefficients of an annular seal. First, the finite ... -
Mean Flow Field and Reynolds Stress Behavior in Coannular Jet Flow With Swirl Along a Centerbody
(The American Society of Mechanical Engineers (ASME), 1991)An experimental study was conducted of an incompressible turbulent flow which exits from two concentric annular nozzles and develops along an unconfined centerbody. The operating Reynolds number ... -
Navier-Stokes Calculations of Transonic Flows Past Cavities
(The American Society of Mechanical Engineers (ASME), 1991)Presented in this paper is a computational investigation of subsonic and transonic flows past three-dimensional deep and transitional cavities. Simulations of these self-induced oscillatory flows ... -
Three-Dimensional Vortex Structure in a Leading-Edge Separation Bubble at Moderate Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 1991)This paper describes the results of a flow visualization study which concerns three-dimensional vortex structures in a leading-edge separation bubble formed along the sides of a blunt flat plate. ... -
Reattachment Length Behind a Single Roughness Element in Turbulent Pipe Flow
(The American Society of Mechanical Engineers (ASME), 1991) -
A Statistical Analysis of Cavitation Erosion Pits
(The American Society of Mechanical Engineers (ASME), 1991)An optical interferometric technique has been used to determine the 3-D shape of cavitation erosion pits. The method which is particularly suitable to the determination of pit diameter and pit ... -
On the Mach Number Variation in Steady Flows of Dense Hydrocarbons
(The American Society of Mechanical Engineers (ASME), 1991)We consider the steady flow of five commonly encountered hydrocarbons in their dense gas regime. Isentropic flows are first examined and it is shown that dense gas effects lead to a non-monotone ... -
A Finite-Element Perturbation Approach to Fluid/Rotor Interaction in Turbomachinery Elements. Part 1: Theory
(The American Society of Mechanical Engineers (ASME), 1991)The vibrational characteristics of a rotor that is in contact with a fluid in an annular clearance gap, as dictated by the fluid forces in the gap, are investigated. The “rotor” here is a ...