Journal of Fluids Engineering: Recent submissions
Now showing items 1481-1500 of 9024
-
Computational Fluid Dynamics-Based Pump Redesign to Improve Efficiency and Decrease Unsteady Radial Forces
(The American Society of Mechanical Engineers (ASME), 2017)In this study, a double volute centrifugal pump with relative low efficiency and high vibration is redesigned to improve the efficiency and reduce the unsteady radial forces with the aid of unsteady computational fluid ... -
Electrochemical Measurements for Real-Time Stochastic Reconstruction of Large-Scale Dynamics of a Separated Flow
(The American Society of Mechanical Engineers (ASME), 2016)The ability of electrochemical sensors to properly measure wall shear stress is here considered for using these sensors as potential candidates for time-resolved estimation of the large-scale activity occurring in the flow ... -
Large Eddy Simulation of Self-Sustained Cavity Oscillation for Subsonic and Supersonic Flows
(The American Society of Mechanical Engineers (ASME), 2017)The primary objective is to perform a large eddy simulation (LES) using shear improved Smagorinsky model (SISM) to resolve the large-scale structures, which are primarily responsible for shear layer oscillations and acoustic ... -
Effect of Microstructure Geometric Form on Surface Shear Stress
(The American Society of Mechanical Engineers (ASME), 2017)Low Reynolds number flow of liquids over micron-sized structures and the control of subsequently induced shear stress are critical for the performance and functionality of many different microfluidic platforms that are ... -
A Nonlinear Computational Model of Tethered Underwater Kites for Power Generation
(The American Society of Mechanical Engineers (ASME), 2016)The dynamic motion of tethered undersea kites (TUSK) is studied using numerical simulations. TUSK systems consist of a rigid winged-shaped kite moving in an ocean current. The kite is connected by tethers to a platform on ... -
Effect of Channel Inlet Blockage on the Wake Structure of a Rotationally Oscillating Cylinder
(The American Society of Mechanical Engineers (ASME), 2016)This paper investigates, experimentally for the first time, the effect of channel inlet blockage induced by bringing the channel inlet walls closer together on the wake structure of a rotationally oscillating cylinder. The ... -
A Modeling Approach to Study the Fluid-Dynamic Forces Acting on the Spool of a Flow Control Valve
(The American Society of Mechanical Engineers (ASME), 2017)This paper introduces an approach to study a valve's internal fluid dynamics. During operation, the flow causes forces on the spool. These forces must be correctly balanced. Since these forces cannot be measured, a ... -
A Numerical Study of Francis Turbine Operation at No-Load Condition
(The American Society of Mechanical Engineers (ASME), 2017)This paper presents a numerical methodology to study Francis turbines at no-load condition, an important operating condition regarding static and dynamic stresses. The proposed methodology uses unsteady Reynolds-averaged ... -
Alternative Approach for Modeling Transients in Smooth Pipe With Low Turbulent Flow
(The American Society of Mechanical Engineers (ASME), 2016)A new simplified approach for modeling and simulating pressure transients resulting from the rapid acceleration or deceleration of turbulent flow in smooth-walled fluid lines is introduced. In contrast to previous approaches ... -
Effect of Relaxation on Drag Forces and Diffusivities of Particles Confined in Rectangular Channels
(The American Society of Mechanical Engineers (ASME), 2016)When a particle is moving inside a channel, its hydrodynamic interaction with channel walls increases its drag coefficient, causing a diffusivity reduction. For charged particles moving in an electrolytic solution, there ... -
Drag Reduction Due to Streamwise Grooves in Turbulent Channel Flow
(The American Society of Mechanical Engineers (ASME), 2016)Drag reduction in turbulent channel flows has significant practical relevance for energy savings. Various methods have been proposed to reduce turbulent skin friction, including microscale surface modifications such as ... -
Canyoneering Fluid Mechanics
(The American Society of Mechanical Engineers (ASME), 2016)Extreme sports such as canyoneering have expanded greatly since the turn of the century yet little scientific attention has been paid to the analyses of the dangers of those activities. The author was much involved in ... -
Aerodynamic Optimization of a Microturbine Inserted in a Magic-Angle Spinning System
(The American Society of Mechanical Engineers (ASME), 2016)The fluid dynamics of a microturbine system that is applied in a device for chemical and biological analysis—a so-called magic-angle spinning (MAS) probe—is investigated. The drive fluid is pressurized air at ambient ... -
Turbulent Flow in the Entry Region of a Rough Pipe
(The American Society of Mechanical Engineers (ASME), 1974)The general characteristics of mean turbulent flow in the entry region of a rough pipe are discussed. A mathematical model is presented for predicting the development of boundary layer thickness, ... -
Editorial
(The American Society of Mechanical Engineers (ASME), 1974) -
Taylor Vortices With Short Rotating Cylinders
(The American Society of Mechanical Engineers (ASME), 1974)Observations of Taylor vortex formation in a short annular clearance show that the final vortex size varies discontinuously with annulus length, ranging from 75 to 115 percent of the theoretical ... -
European Report
(The American Society of Mechanical Engineers (ASME), 1974) -
Letter to the Editor
(The American Society of Mechanical Engineers (ASME), 1974) -
Editorial
(The American Society of Mechanical Engineers (ASME), 1974) -
Supercavitating Linear Cascades With Rounded Noses
(The American Society of Mechanical Engineers (ASME), 1974)A singular perturbation method is used to analyze the flow past a linear cascade of thin supercavitating hydrofoils which have rounded leading edges. This consists essentially of correcting the ...