Journal of Fluids Engineering: Recent submissions
Now showing items 3561-3580 of 9024
-
Application of Fractional Scaling Analysis to Loss of Coolant Accidents: Component Level Scaling for Peak Clad Temperature
(The American Society of Mechanical Engineers (ASME), 2009)Fractional scaling analysis (FSA) is demonstrated here at the component level for depressurization of nuclear reactor primary systems undergoing a large-break loss of coolant accident. This paper ... -
An Experimental and Analytical Investigation of Rectangular Synthetic Jets
(The American Society of Mechanical Engineers (ASME), 2009)In this paper the flow field of a rectangular synthetic jet driven by a piezoelectric membrane issuing into a quiescent environment is studied. The similarities exhibited by synthetic and ... -
Flow Patterns and Aerodynamic Performance of Unswept and Swept-Back Wings
(The American Society of Mechanical Engineers (ASME), 2009)The effects of sweep-back angle (Λ), Reynolds number (Re), and angle of attack (α) on the boundary-layer flow structures and aerodynamic performance of a finite swept-back wing were experimentally ... -
Flow Separation Control on a Race Car Wing With Vortex Generators in Ground Effect
(The American Society of Mechanical Engineers (ASME), 2009)Flow separation control using vortex generators on an inverted wing in ground effect is experimentally investigated, and its performance is characterized in terms of forces and pressure distributions ... -
Direct Numerical Simulations of the Flow Past a Cylinder Moving With Sinusoidal and Nonsinusoidal Profiles
(The American Society of Mechanical Engineers (ASME), 2009)We perform direct numerical simulations of the flow past a circular cylinder undergoing a one-degree-of-freedom transverse oscillation. The displacement follows a sine function raised to an arbitrary ... -
Improving the Spatial Resolution and Stability by Optimizing Compact Finite Differencing Templates
(The American Society of Mechanical Engineers (ASME), 2009)Parameter optimization is an excellent path for easily raising the resolution efficiency of compact finite differencing schemes. Their low-resolution errors are attractive for resolving the fine-scale ... -
Unsteady Velocity Profiles in Laminar and Turbulent Water Hammer Flows
(The American Society of Mechanical Engineers (ASME), 2009)The behavior of unsteady velocity profiles in laminar and turbulent water hammer flows is numerically investigated. In this way, the governing equations for the quasitwo-dimensional equations of ... -
Pulsating Flow for Mixing Intensification in a Twisted Curved Pipe
(The American Society of Mechanical Engineers (ASME), 2009)This work concerns the manipulation of a twisted curved-pipe flow for mixing enhancement. Previous works have shown that geometrical perturbations to a curved-pipe flow can increase mixing and ... -
Experimental Measurement of Laminar Axisymmetric Flow Through Confined Annular Geometries With Sudden Inward Expansion
(The American Society of Mechanical Engineers (ASME), 2009)In this paper, separating and reattaching aqueous laminar flows produced by a sudden inward expansion within confined annular geometries are experimentally studied. The test geometries are based ... -
Theoretical Study of the Laminar Flow in a Channel With Moving Bars
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents a study of the laminar flow in a channel with longitudinal moving bars arrayed along the channel width. The governing equations describing the fluid, which flows along the ... -
Flow Physics of a Race Car Wing With Vortex Generators in Ground Effect
(The American Society of Mechanical Engineers (ASME), 2009)This paper experimentally investigates the use of vortex generators for separation control on an inverted wing in ground effect using off-surface flow measurements and surface flow visualization. ... -
Incipience of Liquid Entrainment From a Stratified Gas-Liquid Region in Multiple Discharging Branches
(The American Society of Mechanical Engineers (ASME), 2008)The onset of liquid entrainment in discharging branches, from a stratified gas-liquid region, has implications in industrial applications where safety is of concern. The onset criterion was ... -
Simulation of Shallow Flows in Nonuniform Open Channels
(The American Society of Mechanical Engineers (ASME), 2008)This paper presents a new formulation of the 2D shallow water equations, based on which a numerical model (referred to as NewChan) is developed for simulating complex flows in nonuniform open ... -
Editorial
(The American Society of Mechanical Engineers (ASME), 2008)The theme of this special issue of JFE is the flow behavior and Rheology of complex fluids and electric phenomena at the micro and nano scale. The papers are drawn from those presented at ... -
Autogenous Suction to Prevent Laminar Boundary-Layer Separation
(The American Society of Mechanical Engineers (ASME), 2008)Boundary-layer separation can be prevented or delayed by sucking part of the boundary layer into the surface, but in a straightforward application the required hydraulics entail significant ... -
Analysis of Coherent Structures in the Far-Field Region of an Axisymmetric Free Jet Identified Using Particle Image Velocimetry and Proper Orthogonal Decomposition
(The American Society of Mechanical Engineers (ASME), 2008)This paper investigates an isothermal free water jet discharging horizontally from a circular nozzle (9mm) into a stationary body of water. The jet exit velocity was 2.5m∕s and the exit Reynolds ... -
PIV Study of Turbulent Flow in Asymmetric Converging and Diverging Channels
(The American Society of Mechanical Engineers (ASME), 2008)An experimental investigation of turbulent flow subjected to variable adverse and favorable pressure gradients in two-dimensional asymmetric channels is reported. The floors of the diverging and ... -
A Grid-Free Lagrangian Approach of Vortex Method and Particle Trajectory Tracking Method Applied to Internal Fluid-Solid Two-Phase Flows
(The American Society of Mechanical Engineers (ASME), 2008)We have developed a numerical simulation scheme combining a vortex method and a particle trajectory tracking method, which is applicable to internal unsteady two-phase flows. It is a completely ... -
Numerical Simulation of Cavitation Around a Hydrofoil and Evaluation of a RNG κ-ε Model
(The American Society of Mechanical Engineers (ASME), 2008)Cavitating flow around a hydrofoil was simulated using a transport equation-based model with consideration of the influence of noncondensable gases. The cavity length and the pressure distributions ... -
Destabilization of Laminar Wall Jet Flow and Relaminarization of the Turbulent Confined Jet Flow in Axially Rotating Circular Pipe
(The American Society of Mechanical Engineers (ASME), 2008)Destabilization and relaminarization phenomena have been investigated in an axially rotating circular duct. Standard k-ε model with modification for streamline curvature has been used in the ...