Journal of Fluids Engineering: Recent submissions
Now showing items 4261-4280 of 9024
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Application of MATLAB Functions for Time Domain Simulation of Systems With Lines With Fluid Transients
(The American Society of Mechanical Engineers (ASME), 2005)Hydraulic and pneumatic fluid transmission lines are often internal components within a total dynamic system to be analyzed by time domain simulation. This paper introduces a new and simple ... -
Surface Flow Visualization Using Thermal Tufts Produced by Evaporatively Cooled Spots
(The American Society of Mechanical Engineers (ASME), 2005)Surface flow visualization is useful for understanding flow in many applications and can be used to complement and validate studies of complex flow using computational fluid dynamics (CFD). A ... -
Transformation of a Polynomial for a Contraction Wall Profile
(The American Society of Mechanical Engineers (ASME), 2005)In the design of contractions for low-speed wind tunnels, several desirable characteristics of the wall profile are identified, primarily consisting of a wall profile described by a function ... -
Computational Analysis of Pressure and Wake Characteristics of an Aerofoil in Ground Effect
(The American Society of Mechanical Engineers (ASME), 2005)The pressure and wake of an inverted cambered aerofoil in ground effect was studied numerically by solving the Reynolds-averaged Navier-Stokes equations. Efforts were focused on the setting up ... -
Experimental Investigation of the Turbulent Boundary Layer of Surfaces Coated With Marine Antifoulings
(The American Society of Mechanical Engineers (ASME), 2005)Turbulent boundary-layer measurements have been carried out on flat surfaces coated with two different new generation marine antifoulings. The coatings were applied on 1-m-long test sections that ... -
Periodic Velocity Measurements in a Wide and Large Radius Ratio Automotive Torque Converter at the Pump∕Turbine Interface
(The American Society of Mechanical Engineers (ASME), 2005)The unsteady flow field due to blade passing at the pump∕turbine interface of a torque converter was studied. The current geometry is wide and has a large outer to inner radius ratio. A ... -
Effects of Wall Roughness on Particle Velocities in a Turbulent Channel Flow
(The American Society of Mechanical Engineers (ASME), 2005)Experimental measurements using a laser Doppler anemometer (LDA) system have been performed on 150μm dense glass particles in a fully developed downward channel flow in air. Tests were conducted ... -
Numerical Study of Cavitation in Cryogenic Fluids
(The American Society of Mechanical Engineers (ASME), 2005)Numerical simulations of cavitation in liquid nitrogen and liquid hydrogen are presented; they represent a broader class of problems where the fluid is operating close to its critical temperature ... -
Modeling of Wall Pressure Fluctuations Based on Time Mean Flow Field
(The American Society of Mechanical Engineers (ASME), 2005)Time-mean flow fields and turbulent flow characteristics obtained from solving the Reynolds averaged Navier-Stokes equations with a k‐ε turbulence model are used to predict the frequency spectrum ... -
Measurements in the Transition Region of a Turbine Blade Profile Under Compressible Conditions
(The American Society of Mechanical Engineers (ASME), 2005)The transition region plays a critical role in the design of turbine blades, as it is accompanied by higher losses (1) and higher heat transfer rates (2). Most of the transition onset and ... -
Experimental and Numerical Investigation of the Flow Field in the Tip Region of an Axial Ventilation Fan
(The American Society of Mechanical Engineers (ASME), 2005)The tip leakage flow in an axial ventilation fan with various tip clearances is investigated by experimental measurement and numerical simulation. For a low-rotating-speed ventilation fan with a ... -
Vortex-Induced Vibration Characteristics of an Elastic Square Cylinder on Fixed Supports
(The American Society of Mechanical Engineers (ASME), 2005)The vortex-induced structural vibration of an elastic square cylinder, on fixed supports at both ends, in a uniform cross flow was measured using fiber-optic Bragg grating sensors. The measurements ... -
Cavitation Properties of Oils Under Dynamic Stressing by Tension
(The American Society of Mechanical Engineers (ASME), 2005)We report measurements of the effective tensile strength Fc of commercial “multigrade” oils (in the SAE viscosity grades 5W-30 and 10W-40) over a range of temperatures T, which are representative ... -
Wind-Driven Rivulet Breakoff and Droplet Flows in Microgravity and Terrestrial-Gravity Conditions
(The American Society of Mechanical Engineers (ASME), 2005)A study is reported of the wind-driven breakoff of rivulets and subsequent droplet flows on a horizontal plate subject to different normal gravitational states, ranging from zero- to terrestrial-gravity ... -
Slip Factor for Centrifugal Impellers Under Single and Two-Phase Flow Conditions
(The American Society of Mechanical Engineers (ASME), 2005)Throughout the history of turbomachines investigators have tried to develop reliable methods for prediction of centrifugal pump behavior. Among the parameters available to estimate the performance ... -
New Mixing-Length Approach for the Mean Velocity Profile of Turbulent Boundary Layers
(The American Society of Mechanical Engineers (ASME), 2005)There has been considerable controversy during the past few years concerning the validity of the universal logarithmic law that describes the mean velocity profile in the overlap region of a ... -
Unstructured Grid Based Reynolds-Averaged Navier-Stokes Method for Liquid Tank Sloshing
(The American Society of Mechanical Engineers (ASME), 2005)The present study is concerned with liquid tank sloshing at low filling level conditions. The volume of fluid method implemented in a Navier–Stokes computational fluid dynamics code is employed ... -
Statistical Approach for Estimating Intervals of Certification or Biases of Facilities or Measurement Systems Including Uncertainties
(The American Society of Mechanical Engineers (ASME), 2005)A statistical approach for estimating intervals of certification or biases of facilities or measurement systems including uncertainties is set forth based on M×N-order level testing, which ... -
Influence of Wall Proximity on the Lift and Drag of a Particle in an Oscillatory Flow
(The American Society of Mechanical Engineers (ASME), 2005)We report on the lift and drag forces on a stationary sphere subjected to a wall-bounded oscillatory flow. We show how these forces depend on two parameters, namely, the distance between the ... -
New Physically Based Approach of Mass Conservation Correction in Level Set Formulation for Incompressible Two-Phase Flows
(The American Society of Mechanical Engineers (ASME), 2005)A novel physically based mass conservation model is developed in the framework of a level set method, as an alternative to the Heaviside function based formulation classically employed in the ...