Journal of Fluids Engineering: Recent submissions
Now showing items 2401-2420 of 9024
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Loss Mechanisms in Shear Force Pump With Multiple Corotating Disks
(The American Society of Mechanical Engineers (ASME), 2014)In a shearforce pump with multiple corotating disks, the pressure gain is obtained by utilizing the shear force produced on the surfaces of the rotating disks. Thus, it is expected to have advantages as a microfluid device ... -
Mechanism for Onset of Sudden Rising Head Effect in Centrifugal Pump When Handling Viscous Oils
(The American Society of Mechanical Engineers (ASME), 2014)The “suddenrising head effect†may be prevalent in the head curve when a centrifugal pump transports highly viscous liquids, but it is not well understood presently. To clarify this effect the hydraulic performance of ... -
Thrust Enhancement Through Bubble Injection Into an Expanding Contracting Nozzle With a Throat
(The American Society of Mechanical Engineers (ASME), 2014)This paper addresses the concept of thrust augmentation through bubble injection into an expandingcontracting nozzle with a throat. The presence of a throat in an expandingcontracting nozzle can result in flow transition ... -
Correlations for Prediction of Pressure Gradient of Liquid Liquid Flow Through a Circular Horizontal Pipe
(The American Society of Mechanical Engineers (ASME), 2014)We report a detailed investigation on the measurement and prediction of pressure gradient characteristics of moderately viscous lubricating oilwater flow through a horizontal pipe of 0.025 m internal diameter. Experiments ... -
Thrust Force Characterization of Oscillating Cantilevers Operating Near Resonance
(The American Society of Mechanical Engineers (ASME), 2014)Harmonic oscillations from cantileverlike structures have found use in applications ranging from thermal management to atomic force microscopy and propulsion, due to their simplicity in design and ease of implementation. ... -
Experimental Flow Field Investigations Downstream a Scaled Up Micro Tangential Jet Scheme Using the Particle Image Velocimetry Technique
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents experimental investigations of the flowfield characteristics downstream a ScaledUp MicroTangentialJet (SUMTJ) filmcooling scheme using the particle image velocimetry (PIV) technique over a flat plate. ... -
Simulations and Analysis of the Reshocked Inclined Interface Richtmyer–Meshkov Instability for Linear and Nonlinear Interface Perturbations
(The American Society of Mechanical Engineers (ASME), 2014)A computational study of the Richtmyer–Meshkov instability (RMI) is presented for an inclined interface perturbation in support of experiments being performed at the Texas A&M shock tube facility. The study is comprised ... -
Reduced Order Model for a Power Law Fluid
(The American Society of Mechanical Engineers (ASME), 2014)This article describes the development of a reduced order model (ROM) based on residual minimization for a generic powerlaw fluid. The objective of the work is to generate a methodology that allows for the fast and accurate ... -
Long Period Pressure Pulsation Estimated in Numerical Simulations for Excessive Flow Rate Condition of Francis Turbine
(The American Society of Mechanical Engineers (ASME), 2014)A series of numerical simulations for a Francis turbine were carried out to estimate the unsteady motion of the cavity in the draft tube of the turbine under a much larger flow rate condition than the swirlfree flow rate. ... -
Energy Balance Associated With a Mixing Process at the Interface of a Two Layer Longitudinal Atmospheric Model
(The American Society of Mechanical Engineers (ASME), 2014)Several examples illustrating the energy balance associated with a mixing process at the interface of a planar dynamical model describing twophase perfect fluid circulating around a circle with a sufficiently large radius ... -
Vortex Ring Model of Tip Vortex Aperiodicity in a Hovering Helicopter Rotor
(The American Society of Mechanical Engineers (ASME), 2014)The wandering motion of tip vortices trailed from a hovering helicopter rotor is described. This aperiodicity is known to cause errors in the determination of vortex properties that are crucial inputs for refined aerodynamic ... -
Analytical Modeling of Gaseous Slip Flow in Parabolic Microchannels
(The American Society of Mechanical Engineers (ASME), 2014)The paper presents an analytical solution of velocity, mass flow rate, and pressure distribution for fully developed gaseous slip flow in nonsymmetric and symmetric parabolic microchannels. The flow is considered to be ... -
Numerical and Experimental Investigations of the Three Dimensional Flow Structure of Tandem Cascades in the Sidewall Region
(The American Society of Mechanical Engineers (ASME), 2014)Tandem blades can be superior to single blades, particularly when large turning angles are required. This is well documented in the open literature and many investigations have been performed on the 2Dflow of tandem cascades ... -
Numerical and Experimental Study of Unsteady Flow in a Large Centrifugal Pump With Stay Vanes
(The American Society of Mechanical Engineers (ASME), 2014)The unsteady flow inside a large centrifugal pump with stay vanes was analyzed in this study. The static performance and pressure fluctuations in the pump were numerically predicted and were compared with experimental data. ... -
Numerical Study of Slat Screen Pattern Effect on Design Parameters of Tuned Liquid Dampers
(The American Society of Mechanical Engineers (ASME), 2014)Tuned liquid dampers (TLDs) are considered economical and effective dynamic vibration absorbers. They are increasingly being used to mitigate the dynamic resonant response of tall buildings and it is often designed to ... -
Flow and Mass Transfer for an Unsteady Stagnation Point Flow Over a Moving Wall Considering Blowing Effects
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, the flow and mass transfer of a twodimensional unsteady stagnationpoint flow over a moving wall, considering the coupled blowing effect from mass transfer, is studied. Similarity equations are derived and ... -
Nonlinear Rayleigh–Taylor Instability of a Cylindrical Interface in Explosion Flows
(The American Society of Mechanical Engineers (ASME), 2014)The nonlinear growth of instabilities of an outward propagating, but decelerating, cylindrical interface separated by fluids of different densities is investigated. Single mode perturbations are introduced around the ... -
Offset Turbulent Jets in Low Aspect Ratio Cavities
(The American Society of Mechanical Engineers (ASME), 2014)The flow induced by a round turbulent offset jet in a lowaspect ratio cylinder is investigated experimentally, with applications to degassing of U.S. Strategic Petroleum Reserves (SPR). Particle image velocimetry and flow ... -
The Effect of a Pressure Containing Correlation Model on Near Wall Flow Simulations With Reynolds Stress Transport Models
(The American Society of Mechanical Engineers (ASME), 2014)It is accustomed to think that turbulence models based on solving the Reynoldsaveraged Navier–Stokes (RANS) equations require empirical functions to accurately reproduce the behavior of flow characteristics of interest, ... -
The Turbulent Schmidt Number
(The American Society of Mechanical Engineers (ASME), 2014)We analyze a large database generated from recent direct numerical simulations (DNS) of passive scalars sustained by a homogeneous mean gradient and mixed by homogeneous and isotropic turbulence on grid resolutions of up ...