Journal of Fluids Engineering: Recent submissions
Now showing items 4241-4260 of 9024
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Numerical Procedure for the Laminar Developed Flow in a Helical Square Duct
(The American Society of Mechanical Engineers (ASME), 2005)The incompressible fully developed laminar flow in a helically duct of square cross section is studied expressing the governing equations in terms of an orthogonal coordinate system. Numerical ... -
A Review of the History of the National Advisory Committee for Aeronautics Centrifugal Compressor Program and Arrival at Current Computational Design Procedures
(The American Society of Mechanical Engineers (ASME), 2005)Before and during World War II, the design and development of single stage high pressure ratio centrifugal compressors was essentially a cut-and-try exercise. To reach a high pressure without ... -
Immiscible Liquid-Liquid Displacement in Capillary Tubes
(The American Society of Mechanical Engineers (ASME), 2005)We analyze the liquid-liquid displacement in capillary tubes. The goal is to determine the amount of displaced liquid that remains attached to the tube wall and the configuration of the ... -
A Mixed-Time-Scale SGS Model With Fixed Model-Parameters for Practical LES
(The American Society of Mechanical Engineers (ASME), 2005)A new subgrid-scale (SGS) model for practical large eddy simulation (LES) is proposed. The model is constructed with the concept of mixed time-scale, which makes it possible to use fixed ... -
Velocity Field Reconstruction in the Mixing Region of Swirl Sprays Using General Regression Neural Network
(The American Society of Mechanical Engineers (ASME), 2005)A general regression neural network technique is proposed for design optimization of pressure-swirl injectors. Phase doppler anemometry measurements for velocity distributions are used to train the ... -
Three-Dimensional Vortex Method for Gas-Particle Two-Phase Compound Round Jet
(The American Society of Mechanical Engineers (ASME), 2005)This paper proposes a three-dimensional vortex method for a gas-particle two-phase compound round jet. The method can take account of the interaction between the two phases by calculating the ... -
Numerical Analysis of High-Speed Bodies in Partially Cavitating Axisymmetric Flow
(The American Society of Mechanical Engineers (ASME), 2005)Partial cavitation of high-speed axisymmetric bodies is modeled using a steady potential-flow boundary-element technique. The effects of several key parameters defining the vehicle geometry are ... -
Scaling of Tip Vortex Cavitation Inception Noise With a Bubble Dynamics Model Accounting for Nuclei Size Distribution
(The American Society of Mechanical Engineers (ASME), 2005)The acoustic pressure generated by cavitation inception in a tip vortex flow was simulated in water containing a realistic bubble nuclei size distribution using a surface-averaged pressure (SAP) ... -
Fundamental Analysis of the Secondary Flows and Jet-Wake in a Torque Converter Pump—Part II: Flow in a Curved Stationary Passage and Combined Flows
(The American Society of Mechanical Engineers (ASME), 2005)Previously, experimental results for the velocity field in a torque converter pump showed strong jet/wake characteristics including backflows and circulatory secondary flows. Navier-Stokes flow ... -
Fundamental Analysis of the Secondary Flows and Jet-Wake in a Torque Converter Pump—Part I: Model and Flow in a Rotating Passage
(The American Society of Mechanical Engineers (ASME), 2005)Previously, experimental results for the velocity field in a torque converter pump showed strong jet/wake characteristics including backflows and circulatory secondary flows. To understand the ... -
Validation of a 3D RANS Solver With a State Equation of Thermally Perfect and Calorically Imperfect Gas on a Multi-Stage Low-Pressure Steam Turbine Flow
(The American Society of Mechanical Engineers (ASME), 2005)A state equation of thermally perfect and calorically imperfect gas is implemented in a 3D RANS solver for turbomachinery flow applications. The specific heats are assumed as linear functions ... -
Vortex Breakdown in a Differentially Rotating Cylindrical Container
(The American Society of Mechanical Engineers (ASME), 2005)Numerical studies are reported on the vortex breakdown in a differentially-rotating cylindrical container in which the top endwall rotates at a high angular velocity Ωt and the cylinder and ... -
A New Class of Synthetic Jet Actuators—Part II: Application to Flow Separation Control
(The American Society of Mechanical Engineers (ASME), 2005)In this work we present the application of the new synthetic jet actuator (SJA) to flow separation control over a NACA 0015 wing. The actuator is compact enough to fit in the interior of ... -
Experimental Analysis on Tip Leakage and Wake Flow in an Axial Flow Fan According to Flow Rates
(The American Society of Mechanical Engineers (ASME), 2005)The flow characteristics in the blade passage and in the wake region of a low-speed axial flow fan have been investigated by experimental analysis using a rotating hot-wire sensor and a ... -
Improvements in Fixed-Valve Micropump Performance Through Shape Optimization of Valves
(The American Society of Mechanical Engineers (ASME), 2005)The fixed-geometry valve micropump is a seemingly simple device in which the interaction between mechanical, electrical, and fluidic components produces a maximum output near resonance. This type ... -
Computational Study of the Flow Around a Ducted Tip Hydrofoil
(The American Society of Mechanical Engineers (ASME), 2005)All lifting surfaces that terminate in a moving fluid create tip vortices as a by-product. Tip vortices on marine propellers have two undesirable effects: they reduce the efficiency of the ... -
Numerical Simulation and Experimental Measurement of Pressure Pulses Produced by a Pulp Screen Foil Rotor
(The American Society of Mechanical Engineers (ASME), 2005)Pressure screening is an efficient means of removing various contaminants that degrade the appearance and strength of paper. A critical component of a screen is the rotor, which induces a ... -
A New Class of Synthetic Jet Actuators—Part I: Design, Fabrication and Bench Top Characterization
(The American Society of Mechanical Engineers (ASME), 2005)Although the potential of synthetic jets as flow separation control actuators has been demonstrated in the existing literature, there is a large gap between the synthetic jet actuators (SJA) ... -
Hydrodynamic Design of Rotodynamic Pump Impeller for Multiphase Pumping by Combined Approach of Inverse Design and CFD Analysis
(The American Society of Mechanical Engineers (ASME), 2005)A combined approach of inverse method and direct flow analysis is presented for the hydrodynamic design of gas-liquid two-phase flow rotodynamic pump impeller. The geometry of impeller blades ... -
Development of an Experimental Correlation for a Pressure Loss at a Side Orifice
(The American Society of Mechanical Engineers (ASME), 2005)An experimental study has been carried out to measure the pressure loss at the side orifice of a liquid metal reactor fuel assembly. The characteristics of the pressure loss at the side ...