Journal of Fluids Engineering: Recent submissions

Now showing items 4361-4380 of 9024

    • The Development Lengths of Laminar Pipe and Channel Flows 

      F. Durst; S. Ray; B. Ünsal; O. A. Bayoumi (The American Society of Mechanical Engineers (ASME), 2005)
      The authors’ research work into fully developed pulsating and oscillating laminar pipe and channel flows raised questions regarding the development length of the corresponding steady flow. For ...

    • Parallel DSMC Simulation of a Single Under-Expanded Free Orifice Jet From Transition to Near-Continuum Regime 

      J.-S. Wu; S.-Y. Chou; U.-M. Lee; Y.-L. Shao; Y.-Y. Lian (The American Society of Mechanical Engineers (ASME), 2005)
      This paper describes the numerical analysis of the flow structure of a single underexpanded argon free jet issuing into a lower-pressure or vacuum environment using the parallel three-dimensional ...

    • A Priori Assessments of Numerical Uncertainty in Large-Eddy Simulations 

      Stephen A. Jordan (The American Society of Mechanical Engineers (ASME), 2005)
      Current suggestions for estimating the numerical uncertainty in solutions by the Large-Eddy Simulation (LES) methodology require either a posteriori input or reflect global assessments. In most ...

    • A Practical Combined Computation Method of Mean Through-Flow for 3D Inverse Design of Hydraulic Turbomachinery Blades 

      Guoyi Peng (The American Society of Mechanical Engineers (ASME), 2005)
      A practical combined computation method of the circumferentially averaged mean through-flow is presented for 3D inverse computations of hydraulic turbomachinery blades to consider the influence of ...

    • Free Surface Length Scale Estimation in Hydraulic Jumps 

      D. Mouaze; F. Murzyn; J. R. Chaplin (The American Society of Mechanical Engineers (ASME), 2005)
      In the context of recent work by Brocchini and Peregrine [J. Fluid Mech., 449, pp. 225–254 (2001a); 449, pp. 255–290 (2001b)] in this paper we aim to document free surface elevations and ...

    • Modeling of Supercritical CO2 Flow Through Short Tube Orifices 

      Chun-Lu Zhang; Liang Yang (The American Society of Mechanical Engineers (ASME), 2005)
      The transcritical cycle of carbon dioxide (CO2) is a promising alternative approach to heat pumps and automobile air conditioners. As an expansion device, the short tube orifice in a transcritical ...

    • Aspects of Shear Layer Unsteadiness in a Three-Dimensional Supersonic Wake 

      Alan L. Kastengren; J. Craig Dutton (The American Society of Mechanical Engineers (ASME), 2005)
      The near wake of a blunt-base cylinder at 10° angle-of-attack to a Mach 2.46 free-stream flow is visualized at several locations to study unsteady aspects of its structure. In both side-view ...

    • A Quantitative Comparison of Delta Wing Vortices in the Near-Wake For Incompressible and Supersonic Free Streams 

      Frank Y. Wang; Ivana M. Milanovic; Khairul B. Zaman; Louis A. Povinelli (The American Society of Mechanical Engineers (ASME), 2005)
      When requiring quantitative data on delta wing vortices for design purposes, low-speed results have often been extrapolated to configurations intended for supersonic operation. This practice stems ...

    • High-Speed Observation of a Cavitating Jet in Air 

      Hitoshi Soyama (The American Society of Mechanical Engineers (ASME), 2005)
      The use of cavitation impact is a practical method for improving the fatigue strength of metals in the same way as shot peening. In the case of peening using cavitation impact, cavitation ...

    • Investigation of the Influence of Injection Rate Shaping on the Spray Characteristics in a Diesel Common Rail System Equipped with a Piston Amplifier 

      J. Benajes; R. Payri; S. Molina; V. Soare (The American Society of Mechanical Engineers (ASME), 2005)
      The quality of the mixing process of fuel and air in a direct injection diesel engine relies heavily on the way the spray develops when injected into the combustion chamber. Among other ...

    • Level-Set Computations of Free Surface Rotational Flows 

      Giuseppina Colicchio; Maurizio Landrini; John R. Chaplin (The American Society of Mechanical Engineers (ASME), 2005)
      A numerical method is developed for modeling the violent motion and fragmentation of an interface between two fluids. The flow field is described through the solution of the Navier-Stokes ...

    • Turbulent Mixing of Two Immiscible Fluids 

      Thierry Lemenand; Pascal Dupont; Dominique Della Valle; Hassan Peerhossaini (The American Society of Mechanical Engineers (ASME), 2005)
      The emulsification process in a static mixer HEV (high-efficiency vortex) in turbulent flow is investigated. This new type of mixer generates coherent large-scale structures, enhancing momentum ...

    • Effective Dewetting in a Microporous Particle 

      Yu Qiao; Xinguo Kong (The American Society of Mechanical Engineers (ASME), 2005)
      In this paper, the kinetics of the outflow in a microporous particle infiltrated by a nonwetting liquid is analyzed in context of effective phase transformation. The “dewetting” process is ...

    • Low Reynolds Number Film Flow Down a Three-Dimensional Bumpy Surface 

      C. Y. Wang (The American Society of Mechanical Engineers (ASME), 2005)
      The slow film flow down a doubly periodic bumpy surface is studied for the first time. Perturbations on the primary variables and the complex boundary conditions lead to a system of successive ...

    • Prediction of Flutter of Turbine Blades in a Transonic Annular Cascade 

      Ivan McBean; Kerry Hourigan; Feng Liu; Mark Thompson (The American Society of Mechanical Engineers (ASME), 2005)
      A parallel multiblock Navier-Stokes solver with the k‐ω turbulence model is used to solve the unsteady flow through an annular turbine cascade, the transonic Standard Test Case 4, Test 628. ...

    • Pseudocylinder Parametrization For Mine Impact Burial Prediction 

      Peter C. Chu; Chenwu Fan (The American Society of Mechanical Engineers (ASME), 2005)
      The United States military has undergone numerous changes since the end of the Cold War. Specifically, the U.S. Navy experienced a shift in the area of engagement from the “blue water” (water ...

    • Prediction of Cascade Flows With Innovative Second-Moment Closures 

      Domenico Borello; Kemal Hanjalic; Franco Rispoli (The American Society of Mechanical Engineers (ASME), 2005)
      We report on the performances of two second-moment turbulence closures in predicting turbulence and laminar-to-turbulent transition in turbomachinery flows. The first model considered is the one ...

    • Extended Velocity–Enthalpy Relations for Wall-Bounded and Free Shear Layers 

      B. W. van Oudheusden (The American Society of Mechanical Engineers (ASME), 2005)
      The relation between the velocity and the enthalpy in steady shear flow is expressed by the Crocco–Busemann relation, which states that for adiabatic conditions the total enthalpy remains constant ...

    • Experimental Methods for Hydrodynamic Characterization of a Very Large Water Tunnel 

      Joel T. Park; J. Michael Cutbirth; Wesley H. Brewer (The American Society of Mechanical Engineers (ASME), 2005)
      The methodology for hydrodynamic characterization of a very large water tunnel is described. Results are presented for the U. S. Navy William B. Morgan Large Cavitation Channel in Memphis, ...

    • Double-Species Slurry Flow in a Horizontal Pipeline 

      P. V. Skudarnov; C. X. Lin; M. A. Ebadian (The American Society of Mechanical Engineers (ASME), 2004)
      Slurry transport experiments were performed with five double-species slurries composed of glass beads and water. The double-species glass beads were various combinations of beads having two widely ...