Journal of Fluids Engineering: Recent submissions
Now showing items 4301-4320 of 9024
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Controlling Turbulence in a Rearward-Facing Step Combustor Using Countercurrent Shear
(The American Society of Mechanical Engineers (ASME), 2005)The present work describes the application of countercurrent shear flow control to the nonreacting flow in a novel step combustor. The countercurrent shear control employs a suction based approach, ... -
Boundary-Layer Transition Affected by Surface Roughness and Free-Stream Turbulence
(The American Society of Mechanical Engineers (ASME), 2005)This paper presents experimental results documenting the effects of surface roughness and free-stream turbulence on boundary-layer transition. The experiments were conducted on a flat surface, upon ... -
Effect of Perforated Plate Open Area on Gas Holdup in Rayon Fiber Suspensions
(The American Society of Mechanical Engineers (ASME), 2005)Three different aeration plates are used to study their effect on gas holdup and flow regime transition in fiber suspensions. The aeration plates differ by their open-area ratios (A=0.57%, ... -
Energy Separation in Steady Separated Wake Flow
(The American Society of Mechanical Engineers (ASME), 2005)The phenomenon that regions of different total enthalpy can develop in an external flow starting from initially homogeneous conditions upstream is known as “energy separation.” Eckert (1-2) ... -
Steady-State Cavitating Nozzle Flows With Nucleation
(The American Society of Mechanical Engineers (ASME), 2005)Quasi-one-dimensional steady-state cavitating nozzle flows with homogeneous bubble nucleation and nonlinear bubble dynamics are considered using a continuum bubbly liquid flow model. The onset of ... -
Steady and Dynamic Models of Fuel and Air Flow in Carburetors for Small Engines
(The American Society of Mechanical Engineers (ASME), 2005)This work presents the mathematical model of a complex flow network containing short metering orifices, compressible flow, and two-phase flow in small diameter pipes. It has been developed to ... -
Comparison of Exact and Sommerfeld Solution for the Pressure of a Journal Bearing
(The American Society of Mechanical Engineers (ASME), 2005)In this paper, we consider the flow in a journal bearing. The Sommerfeld approximate solution is well-known and is discussed in all lubrication texts (1-3). Perhaps less well-known is that an ... -
Centrifugal Flow in a Rotor-Stator Cavity
(The American Society of Mechanical Engineers (ASME), 2005)The present work considers the turbulent flow inside an annular rotor-stator cavity with and without centrifugal throughflow. Extensive measurements performed using a two-component laser-Doppler ... -
Limitations of Richardson Extrapolation and Some Possible Remedies
(The American Society of Mechanical Engineers (ASME), 2005)The origin of oscillatory convergence in finite difference methods is investigated. Fairly simple implicit schemes are used to solve the steady one-dimensional convection-diffusion equation with ... -
Experimental Investigation of Cavity-Induced Acoustic Oscillations in Confined Supersonic Flow
(The American Society of Mechanical Engineers (ASME), 2005)The focus of the present work is the acoustic oscillations exhibited by confined supersonic flow past a rectangular cavity of varying length-to-depth (L∕D) ratio, with a view to identify optimal ... -
A Framework for Coupling Reynolds-Averaged With Large-Eddy Simulations for Gas Turbine Applications
(The American Society of Mechanical Engineers (ASME), 2005)Full-scale numerical prediction of the aerothermal flow in gas turbine engines are currently limited by high computational costs. The approach presented here intends the use of different specialized ... -
Computational Fluid Dynamics Modeling of Impinging Gas-Jet Systems: II. Application to an Industrial Cooling System Device
(The American Society of Mechanical Engineers (ASME), 2005)A numerical analysis of the flow behavior in industrial cooling systems based on arrays of impinging jets has been performed, using several eddy viscosity models to determine their modeling ... -
Numerical Simulation of Vortex Cavitation in a Three-Dimensional Submerged Transitional Jet
(The American Society of Mechanical Engineers (ASME), 2005)Vortex cavitation in a submerged transitional jet is studied with unsteady three-dimensional direct numerical simulations. A locally homogeneous cavitation model that accounts for non-linear bubble ... -
Effect of Wall Roughness on the Dynamics of Unsteady Cavitation
(The American Society of Mechanical Engineers (ASME), 2005)The present paper is devoted to the experimental study of unsteady cavitation on the suction side of a two-dimensional foil section positioned in a cavitation tunnel with a small incidence ... -
Numerical Investigation of Multistage Viscous Micropump Configurations
(The American Society of Mechanical Engineers (ASME), 2005)The viscous micropump consists of a cylinder placed eccentrically inside a microchannel, where the rotor axis is perpendicular to the channel axis. When the cylinder rotates, a net force is ... -
Unsteady Hydrodynamic Forces due to Rotor-Stator Interaction on a Diffuser Pump With Identical Number of Vanes on the Impeller and Diffuser
(The American Society of Mechanical Engineers (ASME), 2005)Experimental and computational study was developed for unsteady hydrodynamic forces on a diffuser pump impeller excited by the interaction between the impeller and the vaned diffuser with the ... -
Performance and Development of a Miniature Rotary Shaft Pump
(The American Society of Mechanical Engineers (ASME), 2005)The development and performance of a novel miniature pump called the rotary shaft pump (RSP) is described. The impeller is made by boring a 1.168 mm hole in one end of a 2.38 mm dia shaft ... -
Slow Dripping of Yield-Stress Fluids
(The American Society of Mechanical Engineers (ASME), 2005)The dripping problem of a viscoplastic (yield-stress) liquid running slowly out of a narrow vertical tube is considered. The volume of the drops which break away is determined. A Lagrangian ... -
Computational Fluid Dynamics Modeling of Impinging Gas-Jet Systems: I. Assessment of Eddy Viscosity Models
(The American Society of Mechanical Engineers (ASME), 2005)Computational fluid dynamics plays an important role in engineering design. To gain insight into solving problems involving complex industrial flows, such as impinging gas-jet systems (IJS), an ... -
A Meshless Local Petrov-Galerkin Method for Fluid Dynamics and Heat Transfer Applications
(The American Society of Mechanical Engineers (ASME), 2005)The meshless local Petrov-Galerkin method has been modified to develop a meshless numerical technique to solve computational fluid dynamics and heat transfer problems. The theory behind the ...