Journal of Fluids Engineering: Recent submissions
Now showing items 5081-5100 of 9024
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Optical Observation of the Supercavitation Induced by High-Speed Water Entry
(The American Society of Mechanical Engineers (ASME), 2000)When a high-speed projectile penetrates into water, a cavity is formed behind the projectile. The gas enclosed in the cavity experiences a nonequilibrium process, i.e., the gas pressure decreases ... -
Rise Height for Negatively Buoyant Fountains and Depth of Penetration for Negatively Buoyant Jets Impinging an Interface
(The American Society of Mechanical Engineers (ASME), 2000)A vertical jet or fountain, whose velocity is opposite to the direction of its buoyant force, reverses direction after reaching a maximum penetration depth. This penetration depth is measured ... -
Pressure Gradient and Choking Velocity for Adiabatic Pipe Flow of a Homogeneous Steam-Water-Solids Mixture
(The American Society of Mechanical Engineers (ASME), 2000)Mixtures containing steam, water, and solids develop when processing ore slurries at elevated temperature and pressure. Based on homogeneous one-dimensional three-phase flow theory equations are ... -
Turbulent Transient Gas Injections
(The American Society of Mechanical Engineers (ASME), 2000)Compressible transient turbulent gaseous jets are formed when natural gas is injected directly into a diesel engine. Multi-dimensional simulations are used to analyze the penetration, mixing, and ... -
Numerical Simulation on the Flow Structure Around the Injection Nozzles for Pneumatic Dimensional Control Systems
(The American Society of Mechanical Engineers (ASME), 2000)A numerical simulation on the airflow exiting from a nozzle in a pneumatic dimensional control system has been conducted using computational fluid dynamics code FLUENT (V. 4.3), which solves ... -
Discharge Coefficients of Critical Venturi Nozzles for CO2 and SF6
(The American Society of Mechanical Engineers (ASME), 2000)The discharge coefficients of critical Venturi nozzles were measured for CO2 and SF6 on the Reynolds number range from 3×103 to 2×105. The results showed that the measured discharge ... -
Numerical Study of the Three-Dimensional Structure of a Bubble Plume
(The American Society of Mechanical Engineers (ASME), 2000)The whole behavior and the micro scale flow characteristics of a three-dimensional bubble plume are investigated numerically. The bubble plume drives liquid convection in a tank due to strong ... -
A Linear Stability Analysis of Cavitation in a Finite Blade Count Impeller
(The American Society of Mechanical Engineers (ASME), 2000)The linear stability analysis of cavitation in flat plate cascades corresponding to 2, 3, 4, and 5-bladed impeller was carried out to clarify the effect of the blade count on cavitation ... -
Image Singularity System to Represent Two Circular Cylinders of Different Diameter
(The American Society of Mechanical Engineers (ASME), 2000)The singularity system to represent two circular cylinders poised under different ambient flow fields is considered in the present research. The singularity system, composed of a series of ... -
Improving Startup Behavior of Fluid Couplings Through Modification of Runner Geometry: Part I—Fluid Flow Analysis and Proposed Improvement
(The American Society of Mechanical Engineers (ASME), 2000)For the use as a startup device the characteristic of a hydrodynamic coupling has to be steep at the nominal high speed operation condition and flat in the range of lower speed ratios. The ... -
Investigation of the Flopping Regime of Two-, Three-, and Four-Plate Arrays
(The American Society of Mechanical Engineers (ASME), 2000)The variation of the base pressure coefficient (Cp) and the characteristics of the power spectra of the velocity for arrays of two-, three- and four-plates aligned normal to the flow are ... -
Large Eddy Simulation of a Smooth Circular Cylinder Oscillating Normal to a Uniform Flow
(The American Society of Mechanical Engineers (ASME), 2000)Results of a numerical evaluation of transitional flow around a circular cylinder forced to oscillate in a direction normal to a uniform flow are presented. The cylinder is considered to be ... -
Geometric Parameters Influencing Flow in an Axisymmetric IC Engine Inlet Port Assembly: Part I—Valve Flow Characteristics
(The American Society of Mechanical Engineers (ASME), 2000)Discharge characteristics in an IC engine inlet port and the dependency on geometrical parameters are examined for two valves having seat angles of 40 and 45 deg. The characteristics were ... -
Numerical Prediction of Flow Fields Around Circular Cylinders: Forced Motion and Dynamic Response Cases
(The American Society of Mechanical Engineers (ASME), 2000)At Re=2000, the predicted flow field around a circular cylinder in forced transverse oscillation is verified with experimental results. For coupled torsional and transverse oscillation cases, the ... -
Geometric Parameters Influencing Flow in an Axisymmetric IC Engine Inlet Port Assembly: Part II—Parametric Variation of Valve Geometry
(The American Society of Mechanical Engineers (ASME), 2000)The influence of inlet valve geometry on IC engine port flow characteristics was investigated systematically by varying the key valve geometric parameters of fillet radius, cone angle, and seat ... -
Measurements and Predictions of a Highly Turbulent Flowfield in a Turbine Vane Passage
(The American Society of Mechanical Engineers (ASME), 2000)As highly turbulent flow passes through downstream airfoil passages in a gas turbine engine, it is subjected to a complex geometry designed to accelerate and turn the flow. This acceleration ... -
Improving Startup Behavior of Fluid Couplings Through Modification of Runner Geometry: Part II—Modification of Runner Geometry and Its Effects on the Operation Characteristics
(The American Society of Mechanical Engineers (ASME), 2000)In Part I of this paper, we analyzed the turbulent flow structure and the torque transport characteristics of a fluid coupling. The results suggested certain modifications of the geometry which ... -
DSMC Analysis of Rarefied Gas Flow Over a Rectangular Cylinder at All Knudsen Numbers
(The American Society of Mechanical Engineers (ASME), 2000)The present study is concerned with the flow behavior of the rarefied gas over a rectangular square cylinder. Attention has been focused on the transition regime between the continuous flow ... -
Analysis on Liquid-Vapor Bubbly-Flow Systems in Reciprocating Motion
(The American Society of Mechanical Engineers (ASME), 1999)An analytical study is performed on the dynamics and hydrodynamic stability of liquid-vapor mixtures in the bubbly-flow range in reciprocating motion through a horizontal channel. The perturbation ... -
Finite Element Modeling of the Acoustic Wave Propagation From a Cavity Near a Free-Surface
(The American Society of Mechanical Engineers (ASME), 1999)