Journal of Fluids Engineering: Recent submissions

Now showing items 4161-4180 of 9024

    • RANS Simulations of a Simplified Tractor/Trailer Geometry 

      Christopher J. Roy; Jeffrey Payne; Mary McWherter-Payne (The American Society of Mechanical Engineers (ASME), 2006)
      Steady-state Reynolds-averaged Navier-Stokes (RANS) simulations are presented for the three-dimensional flow over a simplified tractor/trailer geometry at zero degrees yaw angle. The simulations are ...

    • Effects of Curvature and Convective Heat Transfer in Curved Square Duct Flows 

      R. N. Mondal; Y. Kaga; T. Hyakutake; S. Yanase (The American Society of Mechanical Engineers (ASME), 2006)
      Non-isothermal flows with convective heat transfer through a curved duct of square cross section are numerically studied by using a spectral method, and covering a wide range of curvature, δ, ...

    • Pressure Drop of Fully-Developed, Laminar Flow in Microchannels of Arbitrary Cross-Section 

      M. Bahrami; M. M. Yovanovich; J. R. Culham (The American Society of Mechanical Engineers (ASME), 2006)
      The pressure drop of fully developed, laminar, incompressible flow in smooth mini- and microchannels of arbitrary cross-section is investigated. A compact approximate model is proposed that predicts ...

    • Resistance and Fluctuating Pressures of a Large Elbow in High Reynolds Numbers 

      Hiromi Sago; Mamoru Konomura; Akira Yamaguchi; Tadashi Fujii; Tadashi Shiraishi; Hisato Watakabe (The American Society of Mechanical Engineers (ASME), 2006)
      For the Japan Atomic Energy Agency sodium-cooled fast reactor, an experimental study on the fluctuating pressure of the hot legs was carried out with tests in a 1/3-scale model. The total ...

    • Design of a Low-Turbulence, Low-Pressure Wind-Tunnel for Micro-Aerodynamics 

      Michael J. Martin; Kevin J. Scavazze; Iain D. Boyd; Luis P. Bernal (The American Society of Mechanical Engineers (ASME), 2006)
      A novel wind-tunnel facility has been designed for measurement of lift and drag on micromachined airfoils. The tunnel is designed to operate with pressures ranging from 0.15 to 1.0 atmosphere, ...

    • Design Optimization of Micro Synthetic Jet Actuator for Flow Separation Control 

      Oktay Baysal; Mehti Köklü; Nurhak Erbaş (The American Society of Mechanical Engineers (ASME), 2006)
      A computational analysis and design methodology is presented for effective microflow control using synthetic jets. The membrane is modeled as a moving boundary to accurately compute the flow ...

    • Numerical Study of Active Flow Control for a Transitional Highly Loaded Low-Pressure Turbine 

      Donald P. Rizzetta; Miguel R. Visbal (The American Society of Mechanical Engineers (ASME), 2006)
      Active control was simulated numerically for the subsonic flow through a highly loaded low-pressure turbine. The configuration approximated cascade experiments that were conducted to investigate a ...

    • Transpiration Induced Shock Boundary-Layer Interactions 

      B. Wasistho (The American Society of Mechanical Engineers (ASME), 2006)
      Steady and unsteady shock boundary-layer interactions are studied numerically by solving the two-dimensional time-dependent Navier-Stokes equations. To validate the numerical method, the steady ...

    • The Instability of Shear Thinning and Shear Thickening Spiralling Liquid Jets: Linear Theory 

      J. Uddin; M. J. Simmons; S. P. Decent (The American Society of Mechanical Engineers (ASME), 2006)
      The linear instability of a power law liquid emerging as a jet from an orifice on the surface of a rotating container is investigated, with applications to industrial prilling. Asymptotic ...

    • Measurement of Permeability and Slip Coefficient of Porous Tubes 

      N. M. Brown; F. C. Lai (The American Society of Mechanical Engineers (ASME), 2006)
      Experiments have been conducted to measure the permeability and slip coefficient of seven porous tubes. They were made from fiberglass and nylon nettings with various wall thicknesses. Tests ...

    • Strictly Sinusoidal Flow Around a Stationary Cylinder 

      E. G. Ward; C. Dalton (The American Society of Mechanical Engineers (ASME), 1969)
      The forces exerted upon a cylinder subjected to a purely sinusoidal flow (no mean flow) are analyzed. The analysis considers flows in which symmetrically located vortex pairs are formed and ...

    • Air Flow Through Compressed and Uncompressed Aluminum Foam: Measurements and Correlations 

      Nihad Dukhan; Rubén Picón-Feliciano; Ángel R. Álvarez-Hernández (The American Society of Mechanical Engineers (ASME), 2006)
      Wind-tunnel steady-state unidirectional pressure-drop measurements for airflow through nine compressed and uncompressed isotropic open-cell aluminum foam samples, having different porosities and pore ...

    • Pressure-Driven Flows of Bingham Plastics Over a Square Cavity 

      Evan Mitsoulis; Nikolaos A. Malamataris; S. Marangoudakis; M. Spyratos; Th. Zisis (The American Society of Mechanical Engineers (ASME), 2006)
      Pressure-driven flows over a square cavity are studied numerically for Bingham plastics exhibiting a yield stress. The problem is encountered whenever pressure measurements are made by a drilled-hole ...

    • Surfactant Effects on the Free Surface Thermal Structure and Subsurface Flow in a Wind-Wave Tunnel 

      Supathorn Phongikaroon; K. Peter Judd (The American Society of Mechanical Engineers (ASME), 2006)
      In this study, the dynamic effects of surfactant (oleyl alcohol) on the surface temperature and the near surface velocity field of a wind driven free surface are investigated. Different surfactant ...

    • Hybrid Particle/Grid Method for Predicting Motion of Micro- and Macrofree Surfaces 

      Eiji Ishii; Toru Ishikawa; Yoshiyuki Tanabe (The American Society of Mechanical Engineers (ASME), 2006)
      We developed a method of hybrid particle/cubic interpolated propagation (CIP) to predict the motion of micro- and macrofree surfaces within gas-liquid flows. Microfree surfaces (smaller than the ...

    • Characteristics of Fuel Droplets Discharged From a Compensated Fuel/Ballast Tank 

      Jerry W. Shan; Paisan Atsavapranee; Peter A. Chang; Wesley M. Wilson; Stephan Verosto (The American Society of Mechanical Engineers (ASME), 2006)
      Fuel droplets, formed by the interaction of fuel plumes with a water/fuel interface, can be discharged during the refueling of water-filled compensated fuel/ballast tanks. Motivated by increasingly ...

    • Aerodynamic Drag on Vehicles in Tunnels 

      S. William Gouse; B. S. Noyes; J. K. Nwude; M. C. Swarden (The American Society of Mechanical Engineers (ASME), 1969)
      The purpose of this study was to investigate the aerodynamic drag on vehicles moving in guideways of varying degrees of enclosure. The reason for this study was that several potential high ...

    • Predictions of Charge Drift in a Concept Electrosprayed DISI Engine 

      Geraldo C. S. Nhumaio; A. Paul Watkins (The American Society of Mechanical Engineers (ASME), 2006)
      Limited to nonvaporizing spray cases, this work discusses the transport of charged droplets within a cylinder of a motored axisymmetric model electrosprayed direct injection spark ignition (eDISI) ...

    • Unsteady Flow Structure and Global Variables in a Centrifugal Pump 

      José González; Carlos Santolaria (The American Society of Mechanical Engineers (ASME), 2006)
      A relationship between the global variables and the dynamic flow structure numerically obtained for a low specific speed centrifugal pump is presented in this paper. A previously developed ...

    • Numerical Study of Unsteady Flows in a Scroll Compressor 

      M. M. Cui (The American Society of Mechanical Engineers (ASME), 2006)
      Since scroll compressors contain gas pockets whose shapes and sizes change continuously, the flow fields inside the compressors are time dependent and three-dimensional. The spatial and temporal ...