Journal of Fluids Engineering: Recent submissions
Now showing items 2121-2140 of 9024
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Flow in a Curved Pipe With a Sudden Expansion
(The American Society of Mechanical Engineers (ASME), 2016)This study considers a combination of two well studied flows: the flow in a curved pipe and the flow in a straight pipe with a sudden expansion. Steady laminar flow of an incompressible fluid through an axisymmetric sudden ... -
Nonlinear Control of Axisymmetric Swirling Flows in a Long Finite Length Pipe
(The American Society of Mechanical Engineers (ASME), 2016)Feedback stabilization of inviscid and high Reynolds number, axisymmetric, swirling flows in a long finitelength circular pipe using active variations of pipe geometry as a function of the evolving inlet radial velocity ... -
Improved Efficiency of Microdiffuser Through Geometry Tuning for Valveless Micropumps
(The American Society of Mechanical Engineers (ASME), 2016)Flow rectification in a mechanical valveless micropump that has applications in biological and microrocket propulsion is brought about by pressure drop created across the nozzle/diffuser pair in conjunction with the actuation ... -
Drag Reduction by Ejecting Additive Solutions Into Pure-Water Boundary Layer
(The American Society of Mechanical Engineers (ASME), 1972)Drag reduction caused by ejecting additive solutions from a slot into a pure-water boundary layer on a flat plate has been systematically studied. Results include drag measurements for a plane ... -
Investigation of Flow Separation in a Diffuser of a Bulb Turbine
(The American Society of Mechanical Engineers (ASME), 2016)A threedimensional unsteady flow separation in the straight diffuser of a model bulb turbine is investigated using tuft visualizations, unsteady wall pressure sensors, and particle image velocimetry (PIV). Experimental ... -
Effects of Free Stream Turbulence on Transition of a Separated Boundary Layer Over the Leading Edge of a Constant Thickness Airfoil
(The American Society of Mechanical Engineers (ASME), 2016)This paper describes the change in the transition mechanism of a separated boundary layer formed from the semicircular leadingedge of a constant thickness airfoil as the freestream turbulence (fst) increases. Experiments ... -
Computational Fluid Dynamics Computations Using a Preconditioned Krylov Solver on Graphical Processing Units
(The American Society of Mechanical Engineers (ASME), 2016)Graphical processing unit (GPU) computation in recent years has seen extensive growth due to advancement in both hardware and software stack. This has led to increase in the use of GPUs as accelerators across a broad ... -
Choked Gas Flow at Pore Scale and Its Implications to Production From High Pressure Gas Wells
(The American Society of Mechanical Engineers (ASME), 2016)Production from a highpressure gas well at a high production rate encounters the risk of wellbore tensile failure when the pressure gradient of the averaged gas flow becomes large. At the porescale, however, when flow in ... -
Drag Reduction in Synthetic Seawater by Flexible and Rigid Polymer Addition Into a Rotating Cylindrical Double Gap Device
(The American Society of Mechanical Engineers (ASME), 2016)Flexible and rigid long chain polymers in very dilute solutions can significantly reduce the drag in turbulent flows. The polymers successively stretch and coil by interacting with the turbulent structures, which changes ... -
Effect of a Triangular Rib on a Flat Plate Boundary Layer
(The American Society of Mechanical Engineers (ASME), 2016)The flow structure downstream of a triangular rib over a thin plate placed in a wind tunnel was experimentally investigated using a boundary layer hotwire anemometer. Flow and boundary layer characteristics, such as ... -
Modeling Viscous Oil Cavitating Flow in a Centrifugal Pump
(The American Society of Mechanical Engineers (ASME), 2016)Properly modeling cavitating flow in a centrifugal pump is a very important issue for prediction of cavitation performance in pump hydraulic design optimization and application. As a first trial, the issue is explored by ... -
Vortex Induced Vibration and Frequency Lock In of an Airfoil at High Angles of Attack
(The American Society of Mechanical Engineers (ASME), 2016)Vortexinduced vibration is a fluid instability where vortices due to secondary flows exert a periodic unsteady force on the elastic structure. Under certain circumstances, the shedding frequency can lock into the structure ... -
The Swirling Turbulent Jet
(The American Society of Mechanical Engineers (ASME), 1972)An experimental investigation has been made of a swirling jet having a moderate ratio of swirling to axial momentum. Measurements showed that the flow achieved a self-similarity for the mean ... -
Experimental Validation Data for Computational Fluid Dynamics of Forced Convection on a Vertical Flat Plate
(The American Society of Mechanical Engineers (ASME), 2016)A computational fluid dynamics (CFD) validation dataset for turbulent forced convection on a vertical plate is presented. The design of the apparatus is based on recent validation literature and provides a means to ... -
Annular Gap Bubble Column: Experimental Investigation and Computational Fluid Dynamics Modeling
(The American Society of Mechanical Engineers (ASME), 2016)This paper investigates the countercurrent gas–liquid flow in an annular gap bubble column with a 0.24 m inner diameter by using experimental and numerical investigations. The twophase flow is studied experimentally ... -
Quasi Two Dimensional Numerical Analysis of Fast Transient Flows Considering Non Newtonian Effects
(The American Society of Mechanical Engineers (ASME), 2016)In this study, the difference between laminar fast transient flow of shearthinning liquids and that of Newtonian liquids under similar conditions is numerically studied. Since the literature appears to lack fast transient ... -
Measurement of Temperature Effects on Cavitation in a Turbopump Inducer
(The American Society of Mechanical Engineers (ASME), 2016)Temperature effects on the critical cavitation number and rotating cavitation in a turbopump inducer have been experimentally investigated in water. Static pressures upstream and downstream of the inducer have been measured ... -
Is the Lattice Boltzmann Method Applicable to Rarefied Gas Flows? Comprehensive Evaluation of the Higher Order Models
(The American Society of Mechanical Engineers (ASME), 2016)Lattice Boltzmann method (LBM) whose equilibrium distribution function contains higherorder terms is called higherorder LBM. It is expected that nonequilibrium physics beyond the Navier–Stokes can be accurately captured ... -
Mathematical Model for Viscoplastic Fluid Hammer
(The American Society of Mechanical Engineers (ASME), 2016)The current work presents a mathematical model to simulate “viscoplastic fluid hammerâ€overpressure caused by sudden viscoplastic fluid deceleration in pipelines. The flow is considered onedimensional, isothermal, ... -
Effects of Initial Perturbations in the Early Moments of an Explosive Dispersal of Particles
(The American Society of Mechanical Engineers (ASME), 2016)Recent experiments have shown that when a dense layer of solid particles surrounding a highenergy reactive material is explosively dispersed, the particles cluster locally leading to jetlike patterns. The formation of these ...