Journal of Fluids Engineering: Recent submissions
Now showing items 4561-4580 of 9024
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Measurements Within Vortex Cores in a Turbulent Jet
(The American Society of Mechanical Engineers (ASME), 2003)High-pass filtering of instantaneous two-dimensional PIV data is employed to educe vortices occurring in the axial plane of a self-similar turbulent axisymmetric jet. An automated method is used ... -
Momentum Thickness Measurements for Thick Axisymmetric Turbulent Boundary Layers
(The American Society of Mechanical Engineers (ASME), 2003)Experimental measurements of the mean wall shear stress and boundary layer momentum thickness on long, thin cylindrical bodies are presented. To date, the spatial growth of the boundary layer ... -
Analysis for the Effect of Inverter Ripple Current on Fuel Cell Operating Condition
(The American Society of Mechanical Engineers (ASME), 2003)The effect of inverter ripple current on fuel cell stack performance and stack lifetime remains uncertain. This paper provides a first attempt to examine the impact of inverter load dynamics ... -
Discrete Noise Prediction of Variable Pitch Cross-Flow Fans by Unsteady Navier-Stokes Computations
(The American Society of Mechanical Engineers (ASME), 2003)The unsteady viscous flow fields of a cross-flow fan are computed by time-accurately solving the two-dimensional incompressible Navier-Stokes equations with the unstructured triangular mesh solver ... -
Blast Wave Reflection From Wedges
(The American Society of Mechanical Engineers (ASME), 2003)While a lot of attention was given to shock wave reflections from wedges during the past four decades, only little work was published regarding the similar case of blast wave reflection from ... -
Experiments and Modeling in Bubbly Flows at Elevated Pressures
(The American Society of Mechanical Engineers (ASME), 2003)Measurements of local void fraction, rise velocity, and bubble diameter have been obtained for cocurrent, wall-heated, upward bubbly flows in a pressurized refrigerant. The instrumentation used ... -
Large Eddy Simulation of Flow in a Stirred Tank
(The American Society of Mechanical Engineers (ASME), 2003)Here we report on results obtained from large eddy simulations of flow inside a stirred tank performed using a spectral multidomain technique. The computations were driven by specifying the ... -
Numerical Study of the Flow Around a Bus-Shaped Body
(The American Society of Mechanical Engineers (ASME), 2003)Flow around a simplified bus is analyzed using large-eddy simulation. At the Reynolds number of 0.21×106, based on the model height and the incoming velocity, the flow produces features ... -
Analysis of a Turbulent Propeller Inflow
(The American Society of Mechanical Engineers (ASME), 2003)The unsteady turbulent inflow into a swirl-inducing stator upstream of propeller (SISUP) propeller is presented. The upstream stators and hull boundary layer generate a complex, three-dimensional ... -
Measurement of Void Fraction in Magnetic Fluid Using Electromagnetic Induction
(The American Society of Mechanical Engineers (ASME), 2003)A new technique of measuring void fraction in magnetic fluid using electromagnetic induction was proposed. In order to establish the measuring method, a feasibility study was conducted experimentally ... -
Modeling of Combustion in Gasoline Direct Injection Engines for the Optimization of Engine Management System Through Reduction of Three-Dimensional Models to (n × One-Dimensional) Models
(The American Society of Mechanical Engineers (ASME), 2003)Gasoline direct injection (GDI) spark ignition engines may be able to run over a wide range of operating conditions. The GDI process allows combustion with lean mixtures which may lead to ... -
On the Anisotropy of Axisymmetric Strained Turbulence in the Dissipation Range
(The American Society of Mechanical Engineers (ASME), 2003)Partition of the stress dissipation has been studied in an axisymmetric strained flow field to assess the possible existence of local isotropy for turbulence at small scales. This is a simple ... -
Dense Gas Thermodynamic Properties of Single and Multicomponent Fluids for Fluid Dynamics Simulations
(The American Society of Mechanical Engineers (ASME), 2003)The use of dense gases in many technological fields requires modern fluid dynamic solvers capable of treating the thermodynamic regions where the ideal gas approximation does not apply. Moreover, ... -
Separated Flow in Bends of Arbitrary Turning Angles, Using the Hodograph Method and Kirchhoff’s Free Streamline Theory
(The American Society of Mechanical Engineers (ASME), 2003)The problem of separated flow in bends of arbitrary turning angles has been examined. The method of analysis is based on the inviscid flow theory coupled with Kirchhoff’s separation model. The ... -
Slip Flow in a Curved Tube
(The American Society of Mechanical Engineers (ASME), 2003)The viscous flow in a curved tube with partial slip on the boundary occurs in many practical situations. The problem is formulated in curved tube coordinates and solved by perturbation for ... -
Computations of the Compressible Multiphase Flow Over the Cavitating High-Speed Torpedo
(The American Society of Mechanical Engineers (ASME), 2003)For high-speed cavitating flows, compressibility becomes significant in the liquid phase as well as in the vapor phase. In addition, the compressible energy equation is required for studying the ... -
Computational Fluid Dynamics Performance Estimation of Turbo Booster Vacuum Pump
(The American Society of Mechanical Engineers (ASME), 2003)The CFD performance estimation of turbo booster vacuum pump shows the axial vortex and back flow is evident when the mass flow rate is increased. The pressure is increased from the pump inlet ... -
The Spatial Stability of Natural Convection Flow on Inclined Plates
(The American Society of Mechanical Engineers (ASME), 2003)The spatial stability of a natural convection flow on upward-facing, heated, inclined plates is revisited. The eigenvalue problem is solved numerically employing two methods: the collocation method ... -
Sensitivity Evaluation of a Transport-Based Turbulent Cavitation Model
(The American Society of Mechanical Engineers (ASME), 2003)A sensitivity analysis is done for turbulent cavitating flows using a pressure-based Navier-Stokes solver coupled with a phase volume fraction transport model and nonequilibrium k-ε turbulence ... -
Application of an Angular Momentum Balance Method for Investigating Numerical Accuracy in Swirling Flow
(The American Society of Mechanical Engineers (ASME), 2003)This work derives and applies a method for the investigation of numerical accuracy in computational fluid dynamics. The method is used to investigate discretization errors in computations of ...