Journal of Fluids Engineering: Recent submissions
Now showing items 2341-2360 of 9024
-
Active Control of a Backward Facing Step Flow With Plasma Actuators
(The American Society of Mechanical Engineers (ASME), 2014)Active control over a backward facing step flow is studied experimentally by means of plasma based devices. The Reynolds number based on the step height h is 1520. An electrohydrodynamic actuator (EHD), dielectric barrier ... -
Particle Transport and Deposition in a Turbulent Square Duct Flow With an Imposed Magnetic Field
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, we study particle transport and deposition in a turbulent square duct flow with an imposed magnetic field using direct numerical simulations (DNS) of the continuous flow and Lagrangian tracking of particles. ... -
Flow Pulsation and Geometry Effects on Mixing of Two Miscible Fluids in Microchannels
(The American Society of Mechanical Engineers (ASME), 2014)Many microfluidic applications involve chemical reactions. Most often, the flow is predominantly laminar, and without active or passive mixing enhancement the reaction time can be extremely long compared to the residence ... -
Control Port Influence on Swirl, Operating, and Flow Characteristics of a Mini Vortex Amplifier on Glove Box Service
(The American Society of Mechanical Engineers (ASME), 2014)Vortex amplifiers (VA) use fluidic phenomena to modify flow through a containment breach, when used to protect glove box workers from exposure to the contents. The influence of control port geometry on swirl, operating ... -
Evaluation of Large Eddy Simulation and RANS for Determining Hydraulic Performance of Disinfection Systems for Water Treatment
(The American Society of Mechanical Engineers (ASME), 2014)ReynoldsAveraged Navier–Stokes (RANS) simulation has been demonstrated to be a powerful and efficient approach for conducting numerical assessment of the hydraulic performance of disinfection systems for water treatment ... -
Large Eddy Simulation Exploration of Passive Flow Control Around an Ahmed Body
(The American Society of Mechanical Engineers (ASME), 2014)Large eddy simulations (LES) are used to study passive flow control for drag reduction in a simplified ground vehicle. Addon devices in the form of short cylinders are used for the formation of streaks in the streamwise ... -
On the Performance of Air Lift Pumps: From Analytical Models to Large Eddy Simulation
(The American Society of Mechanical Engineers (ASME), 2014)The present study investigates a hierarchy of models for predicting the performance of airlift pumps. Investigated models range from simplified onedimensional analytical models to large eddy simulation (LES). Numerical ... -
Stokes Flow Characteristics in a Cylindrical Quadrant Duct With Rotating Outer Wall
(The American Society of Mechanical Engineers (ASME), 2014)The Stokes flow in a cylindrical quadrant duct with a rotating wall was analytically and numerically studied. Based on mathematics and fluid dynamics theory, the analytical expressions of three velocity components were ... -
Numerical and Experimental Analysis of the Fluid Structure Interaction in Presence of a Hyperelastic Body
(The American Society of Mechanical Engineers (ASME), 2014)In this study, a numerical algorithm is developed for simulating the interaction between a fluid and a 2D/axisymmetric hyperelastic body based on a full Eulerian fluidstructure interaction (FSI) method. In this method, the ... -
Experimental and Numerical Investigation of Flow Characteristics Near Casing in an Axial Flow Compressor Rotor at Stable and Stall Inception Conditions
(The American Society of Mechanical Engineers (ASME), 2014)Casing instantaneous pressure measurements and fullannulus unsteady simulations were undertaken to analyze flow characteristics near casing at stable and stall inception conditions in an axial flow compressor rotor, and ... -
Pressure Distribution in a Simplified Human Ear Model for High Intensity Sound Transmission
(The American Society of Mechanical Engineers (ASME), 2014)High intensity noise/impulse transmission through a bench model consisting of the simplified ear canal, eardrum, and middle ear cavity was investigated using the CFX/ANSYS software package with fluidstructure interactions. ... -
Steady and Pulsating Turbulent Flows in Complex Pipe Geometries
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, measurements of velocity and stress fields in rigid pipes are performed by means of planar particle image velocimetry (PIV). The attention is focused onto the effect of Reynolds number and of continuous or ... -
Galerkin Boundary Elements for a Computation of the Surface Tractions in Exterior Stokes Flows
(The American Society of Mechanical Engineers (ASME), 2014)In the computation of a three–dimensional steady creeping flow around a rigid body, the total body force and torque are well predicted using a boundary integral equation (BIE) with a single concentrated pair StokesletRotlet ... -
Supersonic Jet Impingement on a Cylinder and Characterization of the Resulting Deflected Jets
(The American Society of Mechanical Engineers (ASME), 2014)The interaction between a mildly underexpanded supersonic jet and a single cylinder was studied experimentally at laboratory scale by using the schlieren technique coupled with highspeed photography and pitot pressure ... -
Energy Redistribution Between the Mean and Pulsating Flow Field in a Separated Flow Region
(The American Society of Mechanical Engineers (ASME), 2014)One of the main features of the backwardfacing step (BFS) low frequency pulsatile flow is the unsteadiness due to the convection of vortical (coherent) structures, which characterize the flow dynamics in the shear layer. ... -
Delayed Detached Eddy Simulation of Airfoil Stall Flows Using High Order Schemes
(The American Society of Mechanical Engineers (ASME), 2014)An advanced hybrid ReynoldsAveraged Navier–Stokes/large eddy simulation (RANS/LES) turbulence model delayed detached eddy simulation (DDES) is conducted in thispaper to investigate the dynamic stall flows over 3D NACA0012 ... -
Investigation and Prediction of Steam Induced Stall Margin Reduction in Two Transonic Rotor Fans
(The American Society of Mechanical Engineers (ASME), 2014)An investigation into the behavior of two transonic compressor rotors operating at nearstall conditions while ingesting hotsteam was undertaken. This type of inlet flow was similar to that experienced by naval aircraft ... -
Study on Capillary Instability With Heat and Mass Transfer Through Porous Media: Effect of Irrotational Viscous Pressure
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, we investigate the effect of irrotational, viscous pressure on capillary instability of the interface between two viscous, incompressible, and thermally conducting fluids in a fully saturated porous medium ... -
Inward Flow Between Stationary and Rotating Disks
(The American Society of Mechanical Engineers (ASME), 2014)The present study predicts the flow field and the pressure distribution for a laminar flow in the gap between a stationary and a rotating disk. The fluid enters through the peripheral gap between two concentric disks and ... -
The Effects of Pipe Geometry on Fluid Flow in a Muon Collider Particle Production System
(The American Society of Mechanical Engineers (ASME), 2014)Liquid mercury has been investigated as a potential highZ target for the production of muon particles for the Muon Collider project. This paper investigates the dynamics of mercury flow in a design of the target delivery ...