Journal of Fluids Engineering: Recent submissions
Now showing items 3761-3780 of 9024
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Instantaneous Behavior of Streamwise Vortices for Turbulent Boundary Layer Separation Control
(The American Society of Mechanical Engineers (ASME), 2007)The present study investigates turbulent boundary layer separation control by means of streamwise vortices with focus on the instantaneous vortex behavior. A turbulent boundary layer is exposed ... -
Steady Analysis of the Thermodynamic Effect of Partial Cavitation Using the Singularity Method
(The American Society of Mechanical Engineers (ASME), 2007)It is well known that the suction performance of turbopumps in cryogenic fluids is much better than that in cold water because of the thermodynamic effect of cavitation. In the present study, ... -
Experimental Study and Numerical Simulation of the FLINDT Draft Tube Rotating Vortex
(The American Society of Mechanical Engineers (ASME), 2007)The dynamics of the rotating vortex taking place in the discharge ring of a Francis turbine for partial flow rate operating conditions and cavitation free conditions is studied by carrying out ... -
Response of Backflow to Flow Rate Fluctuations
(The American Society of Mechanical Engineers (ASME), 2007)The response of backflow at the inlet of an inducer to the flow rate fluctuation is studied by using three-dimensional numerical calculations based on the k-ϵ turbulence model for the discussion ... -
Use of Bacterial Carpets to Enhance Mixing in Microfluidic Systems
(The American Society of Mechanical Engineers (ASME), 2007)We demonstrate that flagellated bacteria can be utilized in surface arrays (carpets) to achieve mixing in a low-Reynolds number fluidic environment. The mixing performance of the system is ... -
Unsteady Computational Analysis of Vehicle Passing
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents results of the simulation of two vehicles overtaking each other at highways conditions (30m∕s). The simulation was fully unsteady and tracks the maneuver for several body ... -
Nanoscale Fluid Flow Over Two Side-by-Side Cylinders With Atomically Rough Surface
(The American Society of Mechanical Engineers (ASME), 2007)A molecular dynamics simulation of flow over two side-by-side cylinders with atomically rough surfaces is presented. The model is two-dimensional with 3×105 liquid argon atoms. The surface ... -
Numerical Model to Predict Unsteady Cavitating Flow Behavior in Inducer Blade Cascades
(The American Society of Mechanical Engineers (ASME), 2007)The cavitation behavior of a four-blade rocket engine turbopump inducer is simulated. A two-dimensional numerical model of unsteady cavitation was applied to a blade cascade drawn from an inducer ... -
An Improved Hydrodynamic Model for Open Wet Transmission Clutches
(The American Society of Mechanical Engineers (ASME), 2007)A mathematical model describing the hydrodynamics of the flow within a disengaged wet transmission clutch is presented. The primary improvement of this model over the existing ones is the ... -
Experimental Study on Flow-Induced Disk Flutter Dynamics by Measuring the Pressure Between Disks
(The American Society of Mechanical Engineers (ASME), 2007)It is important to clarify the characteristics of flow-induced vibrations in hard disk drives in order to achieve an ultrahigh magnetic recording density. In particular, it is necessary to ... -
Variation of the Recirculation Length of Newtonian and Non-Newtonian Power-Law Fluids in Laminar Flow Through a Suddenly Expanded Axisymmetric Geometry
(The American Society of Mechanical Engineers (ASME), 2007)A numerical study has been carried out for the laminar flow of Newtonian and non-Newtonian power-law fluids through a suddenly expanded axisymmetric geometry. Mathematical correlations are proposed ... -
A Numerical Study of the Global Performance of Two Static Mixers
(The American Society of Mechanical Engineers (ASME), 2007)The use of in-line static mixers has been widely advocated for an important variety of applications, such as continuous mixing, heat and mass transfer processes, and chemical reactions. This ... -
Characterization of the Content of the Cavity Behind a High-Speed Supercavitating Body
(The American Society of Mechanical Engineers (ASME), 2007)A high speed/high flow test facility was designed and implemented to study experimentally the supercavitating flow behind a projectile nose in a controlled laboratory setting. The simulated ... -
Thermodynamic Effect on a Cavitating Inducer in Liquid Nitrogen
(The American Society of Mechanical Engineers (ASME), 2007)For experimental investigations of the thermodynamic effect on a cavitating inducer, it is nesessary to observe the cavitation. However, visualizations of the cavitation are not so easy in ... -
Small Scale Modeling of Vertical Surface Jets in Cross-Flow: Reynolds Number and Downwash Effects
(The American Society of Mechanical Engineers (ASME), 2007)Jet-crossflow experiments were performed in a water channel to determine the Reynolds number effects on the plume trajectory and entrainment coefficient. The purpose was to establish a lower ... -
Numerical Prediction of Cavitating Flow on a Two-Dimensional Symmetrical Hydrofoil and Comparison to Experiments
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents comparisons between two-dimensional (2D) CFD simulations and experimental investigations of the cavitating flow around a symmetrical 2D hydrofoil. This configuration was proposed ... -
Mixed Convection From a Heated Square Cylinder to Newtonian and Power-Law Fluids
(The American Society of Mechanical Engineers (ASME), 2007)Steady laminar mixed convection flow and heat transfer to Newtonian and power-law fluids from a heated square cylinder has been analyzed numerically. The full momentum and energy equations along ... -
A Numerical Study of Entrainment Mechanism in Axisymmetric Annular Gas-Liquid Flow
(The American Society of Mechanical Engineers (ASME), 2007)The main purpose of this study is to investigate liquid entrainment mechanisms of annular flow by computational fluid dynamics (CFD) techniques. In the modeling, a transient renormalization group ... -
Experimental Investigation of Secondary Flow Structure in a Blade Passage With and Without Leading Edge Fillets
(The American Society of Mechanical Engineers (ASME), 2007)Velocity and pressure measurements are presented for a blade passage with and without leading edge contouring in a low speed linear cascade. The contouring is achieved through fillets placed ... -
Stability of Taylor–Couette Magnetoconvection With Radial Temperature Gradient and Constant Heat Flux at the Outer Cylinder
(The American Society of Mechanical Engineers (ASME), 2007)An analysis is made of the linear stability of wide-gap hydromagnetic (MHD) dissipative Couette flow of an incompressible electrically conducting fluid between two rotating concentric circular ...