Journal of Fluids Engineering: Recent submissions
Now showing items 3261-3280 of 9024
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Axial Flow Fan Tip Leakage Flow Control Using Tip Platform Extensions
(The American Society of Mechanical Engineers (ASME), 2010)Performance of an axial flow fan unit is closely related to its tip leakage mass flow rate and level of tip/casing interactions. The present experimental study uses a stereoscopic particle ... -
Prediction of the Nonuniform Tip Clearance Effect on the Axial Compressor Flow Field
(The American Society of Mechanical Engineers (ASME), 2010)It is well-known that nonuniform tip clearance in an axial compressor induces pressure and velocity perturbations along the circumferential direction. This study develops a numerical modeling to ... -
Flow Characteristics of Microglass Fiber Suspension in Polymeric Fluids in Spherical Gaps
(The American Society of Mechanical Engineers (ASME), 2010)An experimental study is carried out to investigate the effects of microglass fiber suspensions in the non-Newtonian fluids in a gap between an inner rotating sphere and an outer whole stationary ... -
Active Control of Flow Separation in a Radial Blower
(The American Society of Mechanical Engineers (ASME), 2010)An experimental investigation was undertaken as a proof-of-concept study for active separation control in a radial blower. Acoustic perturbations were introduced into the impeller housing of a ... -
Spectral Linear Stochastic Estimation of the Turbulent Velocity in a Square Three-Dimensional Wall Jet
(The American Society of Mechanical Engineers (ASME), 2010)The instantaneous turbulent velocity field in a three-dimensional wall jet was estimated from the fluctuating wall pressure using a spectral linear stochastic estimation technique. The wall jet ... -
Factors of Safety for Richardson Extrapolation
(The American Society of Mechanical Engineers (ASME), 2010)A factor of safety method for quantitative estimates of grid-spacing and time-step uncertainties for solution verification is developed. It removes the two deficiencies of the grid convergence ... -
Impact of Surface Roughness on Compressor Cascade Performance
(The American Society of Mechanical Engineers (ASME), 2010)This paper presents an experimental investigation of roughness effects on aerodynamic performance in a low-speed linear compressor cascade. Equivalent sandgrain roughnesses of 12 μm, 180 μm, 300 ... -
Sound Generation in Subsonic Turbomachinery
(The American Society of Mechanical Engineers (ASME), 1970)Sources of noise in axial-flow machines are studied theoretically with the aid of a simplified two-dimensional model. The analysis leads to estimates of the discrete-frequency sound output from ... -
Influence of the Slant Angle of 3D Bluff Bodies on Longitudinal Vortex Formation
(The American Society of Mechanical Engineers (ASME), 2010)This paper presents the experimental results and analytical arguments concerning simplified geometries of the rear window and windscreen of automotive vehicles in order to contribute to a better ... -
Particle Trajectory Study in Submerged Flows With Baffles Using ν2¯−f and k−ε Turbulence Models
(The American Society of Mechanical Engineers (ASME), 2010)In this paper, the structure of a wall jet deflected by a baffle along with the trajectory of particles has been studied. This baffle is used to produce a stable deflected surface jet, ... -
A Method for Three-Dimensional Navier–Stokes Simulations of Large-Scale Regions of the Human Lung Airway
(The American Society of Mechanical Engineers (ASME), 2010)A new methodology for CFD simulation of airflow in the human bronchopulmonary tree is presented. The new approach provides a means for detailed resolution of the flow features via three-dimensional ... -
Investigation of the Flow Field in a Rectangular Vessel Equipped With a Side-Entering Agitator
(The American Society of Mechanical Engineers (ASME), 2010)The hydrodynamics of stirred vessels with side-entering impellers, which are used in numerous process industries including petroleum, foods, and pulp and paper manufacturing, have received limited ... -
Analysis and Prevention of Vortex Breakdown in the Simplified Discharge Cone of a Francis Turbine
(The American Society of Mechanical Engineers (ASME), 2010)We perform a numerical analysis of the decelerated swirling flow into the discharge cone of a model Francis turbine operated at variable discharge and constant head, using an axisymmetric ... -
Development-Length Requirements for Fully Developed Laminar Flow in Concentric Annuli
(The American Society of Mechanical Engineers (ASME), 2010)In this technical brief we report the results of a systematic numerical investigation of developing laminar flow in axisymmetric concentric annuli over a wide range of radius ratio (0.01<Ri ... -
A Study of Cycle-to-Cycle Variations and the Influence of Charge Motion Control on In-Cylinder Flow in an IC Engine
(The American Society of Mechanical Engineers (ASME), 2010)An experimental study is performed to investigate the cycle-to-cycle variations and the influence of charge motion control on in-cylinder flow measurement inside an internal combustion engine ... -
LES of the Slipstream of a Rotating Train
(The American Society of Mechanical Engineers (ASME), 2010)The slipstream of a high-speed train was investigated using large-eddy simulation (LES). The subgrid stresses were modeled using the standard Smagorinsky model. The train model consisted of a ... -
An Analytical Modeling of the Central Core Flow in a Rotor-Stator System With Several Preswirl Conditions
(The American Society of Mechanical Engineers (ASME), 2010)In the most part of an enclosed rotor-stator system with separated boundary layers, the flow structure is characterized by a central core rotating as a solid body with a constant core-swirl ... -
Application of the k-ε Turbulence Model to Buoyant Adiabatic Wall Plumes
(The American Society of Mechanical Engineers (ASME), 2010)Computational fluid dynamics based on Reynolds averaged Navier–Stokes equations is used to model a turbulent planar buoyant adiabatic wall plume. The plume is generated by directing a helium/air ... -
A Numerical Investigation of the Constant-Velocity Volute Design Approach as Applied to the Single Blade Impeller Pump
(The American Society of Mechanical Engineers (ASME), 2010)This contribution addresses volute design as applied to single-blade-impeller pumps. Traditionally, volute design for multiblade impeller pumps has been carried out using either the constant-velocity ... -
Maximum Spread of Droplet on Solid Surface: Low Reynolds and Weber Numbers
(The American Society of Mechanical Engineers (ASME), 2010)This theoretical study proposes an analytical model to predict the maximum spread of single droplets on solid surfaces with zero or low Weber and Reynolds numbers. The spreading droplet is ...