Journal of Fluids Engineering: Recent submissions
Now showing items 2181-2200 of 9024
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Experimental Investigation of Pressure Distribution in Turbulent Flow Between Parallel and Inclined Disks
(The American Society of Mechanical Engineers (ASME), 2015)Although the flow between parallel and inclined disks is a simple representation of many complex flow situations, this class of flow poses significant problems for experimental and numerical study. This paper presents ... -
Numerical Approach to Study Nonuniform Gas–Liquid Distribution in the Refrigerant Distributor in an Air Conditioner
(The American Society of Mechanical Engineers (ASME), 2015)Factors that influence the nonuniform gas–liquid distribution in refrigerant distributors in air conditioners were studied. Gas–liquid flows in twopass and multipass distributors were numerically simulated with a ... -
Modeling the Effect of Stability Bleed on Back Pressure in Mixed Compression Supersonic Inlets
(The American Society of Mechanical Engineers (ASME), 2015)To stabilize the terminal normal shock on highstatic pressure at outlet, called backpressure pout, stability bleed slots are used in the throat of mixedcompression supersonic inlets. In this paper, a model for the functional ... -
Shaping Air Flow Characteristics of a High Speed Rotary Bell Sprayer for Automotive Painting Processes
(The American Society of Mechanical Engineers (ASME), 2015)Electrostatic rotary bell sprayers (ERBS) are widely used in automotive painting applications. These processes involve complex airflows to shape paint sprays and transport droplets toward automotive parts to be coated. ... -
On Viscous Flow in Semi Elliptic Ducts
(The American Society of Mechanical Engineers (ASME), 2015)The exact series solutions for the laminar flow in a semielliptic duct are presented. The present work studies the semielliptic duct with the minor axis as the straight wall, which complements that of Alassar and Abushoshah ... -
Experimental Investigation of the Role of Large Scale Cavitating Vortical Structures in Performance Breakdown of an Axial Waterjet Pump
(The American Society of Mechanical Engineers (ASME), 2015)Flow phenomena and mechanisms involved in cavitation breakdown, namely, a severe degradation of pump performance caused by cavitation, have been a longstanding puzzle. In this paper, results of highspeed imaging as well ... -
Numerical Simulation of Turbulent Pipe Flow for Water Hammer
(The American Society of Mechanical Engineers (ASME), 2015)A numerical model of turbulent transient flow is used to study the dynamics of turbulence during different periods of water hammer in a polymeric pipe. The governing equations of the transient flow are solved by using the ... -
Effect of Orifice Geometry on the Development of Slightly Heated Turbulent Jets
(The American Society of Mechanical Engineers (ASME), 2015)Passive scalar (temperature) mixing with different orifice geometries is considered at low Reynolds number. The kinetic energy dissipation rate shows that the three jets achieve a selfsimilar state quickly compared to a ... -
Coupled Multipoint Shape Optimization of Runner and Draft Tube of Hydraulic Turbines
(The American Society of Mechanical Engineers (ASME), 2015)This paper suggests a method of simultaneous multiobjective shape optimization of hydraulic turbine runner and draft tube (DT) with the objective to increase turbine efficiency in wide range of operating points (OPs). ... -
A Model Constraint for Polydisperse Solids in Multifluid Flows
(The American Society of Mechanical Engineers (ASME), 2015)A method to assess computational fluid dynamics (CFD) models for polydisperse granular solids in a multifluid flow is developed. The proposed method evaluates a consistency constraint, or a condition that an Eulerian ... -
Numerical Investigation of the Spear Valve Configuration on the Performance of Pelton and Turgo Turbine Injectors and Runners
(The American Society of Mechanical Engineers (ASME), 2015)This paper uses two modern commercial cfd software packages to compare the performance of a standard and improved impulse turbine injector developed in a previous study. The two injector designs are compared by simulating ... -
Mass Loading Effects on Turbulence Modulation by Particle Clustering in Dilute and Moderately Dilute Channel Flows
(The American Society of Mechanical Engineers (ASME), 2015)Wallbounded particleladen flows exhibit a variety of interesting phenomena that can greatly impact the underlying carrierphase turbulence in practical systems. This work aims at investigating the effects of particle ... -
Flow Control on a Transport Truck Side Mirror Using Plasma Actuators
(The American Society of Mechanical Engineers (ASME), 2015)A wind tunnel study is conducted toward hybrid flow control of a full scale transport truck side mirror at ReD=3.2أ—105. A slim guide vane is employed for redirecting highmomentum flow toward the mirror wake region. Leading ... -
Modified Shallow Water Equations With Application for Horizontal Centrifugal Casting of Rolls
(The American Society of Mechanical Engineers (ASME), 2015)A numerical model based on the shallow water equations (SWE) was proposed to simulate the twodimensional (2D) average flow dynamics of the liquid metal spreading inside a horizontally rotating mold. The SWE were modified ... -
Effects of Rotating Inlet Distortion on Compressor Stability With Stall Precursor Suppressed Casing Treatment
(The American Society of Mechanical Engineers (ASME), 2015)This paper conducts an experimental research of rotating inlet distortion on a lowspeed large size test compressor with emphasis on the stability problem of axial fan/compressors, and the stall margin enhancement with a ... -
Large Eddy Simulation of Flows Around a Kite Used as an Auxiliary Propulsion System
(The American Society of Mechanical Engineers (ASME), 2015)The aerodynamic forces acting on a kite proposed for propelling marine shipping are investigated using computational and experimental means. Attention is given to the kite's positions as perpendicular or nearly perpendicular ... -
Large Eddy Simulation of a Mixed Flow Pump at Off Design Conditions
(The American Society of Mechanical Engineers (ASME), 2015)The flow through turbopumps is characterized by highly unsteady phenomena at part load conditions, involving large separation and generation of vortical structures. This behavior is strongly dependent on the interaction ... -
Experimental Investigation of the Full Flow Field in a Molten Salt Pump by Particle Image Velocimetry
(The American Society of Mechanical Engineers (ASME), 2015)Particle image velocimetry (PIV) technology was used to study steady and unsteady internal flow fields in a molten salt pump under both internal and external synchronization modes. The velocity fields in the suction chamber, ... -
Low Reynolds Number Flow Characteristics for Two Side by Side Rotating Cylinders
(The American Society of Mechanical Engineers (ASME), 2015)Numerical simulations were performed for twodimensional viscous incompressible flow past two stationary sidebyside rotating circular cylinders at Reynolds number (Re) 100 by varying centertocenter distance between the ... -
Effect of Trailing Edge Modification of a Mixed Flow Pump
(The American Society of Mechanical Engineers (ASME), 2015)Modern pumps are designed to guarantee a sufficiently large operating range or to satisfy the performance requirements relative to more than one operating point. This study applies trailingedge (TE) modification method ...