Journal of Fluids Engineering: Recent submissions
Now showing items 3801-3820 of 9024
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An Application of a Gradient Theory With Dissipative Boundary Conditions to Fully Developed Turbulent Flows
(The American Society of Mechanical Engineers (ASME), 2007)The paper presents a complete gradient theory of grade two, including new dissipative boundary conditions based on an axiomatic conception of a nonlocal continuum theory for materials of grade ... -
LES Simulation of Backflow Vortex Structure at the Inlet of an Inducer
(The American Society of Mechanical Engineers (ASME), 2007)Turbopump inducers often have swirling backflow under a wide range of flow rates because they are designed with a certain angle of attack even at the design point in order to attain high ... -
Automatic Differentiation of the General-Purpose Computational Fluid Dynamics Package FLUENT
(The American Society of Mechanical Engineers (ASME), 2007)Derivatives are a crucial ingredient to a broad variety of computational techniques in science and engineering. While numerical approaches for evaluating derivatives suffer from truncation error, ... -
Direct Numerical Simulation of Bubbly Flows and Application to Cavitation Mitigation
(The American Society of Mechanical Engineers (ASME), 2007)The direct numerical simulation (DNS) method has been used to the study of the linear and shock wave propagation in bubbly fluids and the estimation of the efficiency of the cavitation ... -
Flow Downstream of a Cluster of Nine Jets
(The American Society of Mechanical Engineers (ASME), 2007)This work is an experimental investigation of the flow downstream of a low emission nozzle. The nozzle is a 3×3 square matrix of nine small swirling air jets, has a design swirl number ... -
Flow Field Measurement in a Crossflowing Elevated Jet
(The American Society of Mechanical Engineers (ASME), 2007)Structural features resulting from the interaction of a turbulent round jet issuing transversely into a uniform stream are described with the help of flow visualization and the PIV technique. ... -
An Experimental Study of Artificially-Generated Turbulent Spots Under Strong Favorable Pressure Gradients and Freestream Turbulence
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents experimental results on the internal flow structure of turbulent spots, and examines the sensitivity of this structure to streamwise acceleration rate and freestream turbulence. ... -
Development of a Nozzle-Flapper-Type Servo Valve Using a Slit Structure
(The American Society of Mechanical Engineers (ASME), 2007)Pneumatic servo valves play a significant role in power transmission and system control using a pressurized gas. When pressurized air passes through servo valves, noise and pressure fluctuations ... -
A Quasi-Analytical Method for Fluid Flow in a Multi-Inlet Collection Manifold
(The American Society of Mechanical Engineers (ASME), 2007)This paper sets forth a fully validated quasianalytical method for determining the fluid flow in a multi-inlet collection manifold. The method is based on first principles, which are the ... -
Control of Vortex Shedding From a Bluff Body Using Imposed Magnetic Field
(The American Society of Mechanical Engineers (ASME), 2007)The two-dimensional incompressible laminar viscous flow of a conducting fluid past a square cylinder placed centrally in a channel subjected to an imposed transverse magnetic field has been ... -
Phase-Averaged PIV for the Nominal Wake of a Surface Ship in Regular Head Waves
(The American Society of Mechanical Engineers (ASME), 2007)Phase-averaged organized oscillation velocities (U,V,W) and random fluctuation Reynolds stresses (uu¯,vv¯,ww¯,uv¯,uw¯) are presented for the nominal wake of a surface ship ... -
The Application of an Aerodynamic Shroud for Axial Ventilation Fans
(The American Society of Mechanical Engineers (ASME), 2007)An experimental investigation of an aerodynamic shroud applied to an axial ventilation fan system is reported. The aerodynamic shroud consists of a pressurized plenum and Coanda attachment surface, ... -
Observation of Centrifugal Compressor Stall and Surge in Phase Portraits of Pressure Time Traces at Impeller and Diffuser Wall
(The American Society of Mechanical Engineers (ASME), 2007)Unsteady static pressure signals due to flow instability in two types of centrifugal compressors were analyzed by employing the phase portrait reconstruction method. The sampled data corresponded ... -
Development of a New Simulation Technique Based on the Modal Approximation for Fluid Transients in Complex Pipeline Systems With Time-Variant Nonlinear Boundary Conditions
(The American Society of Mechanical Engineers (ASME), 2007)A new simulation technique called the system modal approximation method (SMA) for fluid transients in complex pipeline systems has been proposed. The superiority of this technique compared to ... -
Effect of Turbulence Intensity and Periodic Unsteady Wake Flow Condition on Boundary Layer Development, Separation, and Reattachment Along the Suction Surface of a Low-Pressure Turbine Blade
(The American Society of Mechanical Engineers (ASME), 2007)This paper experimentally investigates the individual and combined effects of periodic unsteady wake flows and freestream turbulence intensity (FSTI) on flow separation along the suction surface ... -
Modeling of Effect of Inflow Turbulence Data on Large Eddy Simulation of Circular Cylinder Flows
(The American Society of Mechanical Engineers (ASME), 2007)A random flow generation (RFG) algorithm for a previously established large eddy simulation (LES) code is successfully incorporated into a finite element fluid flow solver to generate the required ... -
Experimental Leak-Rate Measurement Through a Static Metal Seal
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents an experimental study to characterize fluid leakage through a rough metal contact. The focus is on an original experimental setup and procedure designed to measure the fluid ... -
Comments on “Liquid Film Atomization on Wall Edges-Separation Criterion and Droplets Formation Model”
(The American Society of Mechanical Engineers (ASME), 2007)In an intriguing paper (1), Maroteaux, Llory, Le Coz, and Habchi presented a separation criterion for a liquid film from sharp edges in a high-speed air flow. According to their model, the ... -
Conditionally-Sampled Turbulent and Nonturbulent Measurements of Entropy Generation Rate in the Transition Region of Boundary Layers
(The American Society of Mechanical Engineers (ASME), 2007)Conditionally-sampled boundary layer data for an accelerating transitional boundary layer have been analyzed to calculate the entropy generation rate in the transition region. By weighing the ... -
A Numerical Tool for the Design/Analysis of Dual-Cavitating Propellers
(The American Society of Mechanical Engineers (ASME), 2007)The motivation of this work is to develop a numerical tool to explore a new propeller design with dual-cavitating characteristics, i.e., one that is capable of operating efficiently at low ...