Journal of Fluids Engineering: Recent submissions
Now showing items 3821-3840 of 9024
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Multifrequency Instability of Cavitating Inducers
(The American Society of Mechanical Engineers (ASME), 2007)Recent testing of high-speed cavitating turbopump inducers has revealed the existence of more complex instabilities than the previously recognized cavitating surge and rotating cavitation. This ... -
Gas–Solid Particle Flow in Horizontal Channels: Decomposition of the Particle-Phase Flow and Interparticle Collision Effects
(The American Society of Mechanical Engineers (ASME), 2007)This paper examines the turbulent flow of heavy particles in horizontal channels and pipes. Calculations for the fluid are performed within an Eulerian frame of reference, while the particulate ... -
Numerical Investigation of Liquid-Liquid Coaxial Flows
(The American Society of Mechanical Engineers (ASME), 2007)This paper presents numerical results of the interfacial dynamics of axisymmetric liquid-liquid flows when the denser liquid is injected with a parabolic inlet velocity profile into a coflowing ... -
Experimental Investigation of the Fluid Motion in a Cylinder Driven by a Flat-Plate Impeller
(The American Society of Mechanical Engineers (ASME), 2007)The flow field in a cylindrical container driven by a flat-bladed impeller was investigated using particle image velocimetry (PIV). A range of Reynolds numbers (0.005–7200), based on the container ... -
Influence of Boundary Layer Behavior on Aerodynamic Coefficients of a Swept-Back Wing
(The American Society of Mechanical Engineers (ASME), 2007)The effects of the Reynolds number and angle of attack on the boundary layer and the aerodynamic performance of a finite swept-back wing are studied experimentally. The cross-sectional profile ... -
Numerical Study of the Injection Process in a Transonic Wind Tunnel—Part I: The Design Point
(The American Society of Mechanical Engineers (ASME), 2007)Injectors are to be installed in a transonic wind tunnel with the ultimate objective of expanding the Reynolds number envelope. The aim of this research effort is to numerically simulate the ... -
Initial Stage of Natural Convection Over a Hot Aerosol Sphere
(The American Society of Mechanical Engineers (ASME), 2007)Background: Analytical study is presented on the transient problem of buoyancy-induced motion due to the presence of a hot aerosol sphere in unbounded quiescent fluid. Method of Approach: Because ... -
Cosserat Modeling of Turbulent Plane-Couette and Pressure-Driven Channel Flows
(The American Society of Mechanical Engineers (ASME), 2007)The theory of micropolar fluids based on a Cosserat continuum model is utilized for analysis of two benchmarks, namely, plane-Couette and pressure-driven channel flows. In the obtained theoretical ... -
Effect of Hydrofoil Shapes on Partial and Transitional Cavity Oscillations
(The American Society of Mechanical Engineers (ASME), 2007)The effects of foil geometry on partial and transitional cavity oscillations were examined by experiments. The transitional cavity oscillation can be observed in the upstream pressure fluctuation ... -
The Asymmetry of the Large-Scale Structures in Turbulent Three-Dimensional Wall Jets Exiting Long Rectangular Channels
(The American Society of Mechanical Engineers (ASME), 2007)The development of the large-scale structures in three-dimensional wall jets formed using long rectangular channels with aspect ratios of 1 and 4 was investigated using measurements of the ... -
Experimental and Numerical Investigation of a Swirl Stabilized Premixed Combustor Under Cold-Flow Conditions
(The American Society of Mechanical Engineers (ASME), 2007)Planar velocity measurements under cold-flow conditions in a swirl-stabilized dump combustor typical of land-based gas turbine combustors were carried out using two-dimensional particle image ... -
Acceleration Methods for Coarse-Grained Numerical Solution of the Boltzmann Equation
(The American Society of Mechanical Engineers (ASME), 2007)We present a coarse-grained steady-state solution framework for the Boltzmann kinetic equation based on a Newton-Broyden iteration. This approach is an extension of the equation-free framework ... -
Temporal Stability of Carreau Fluid Flow Down an Incline
(The American Society of Mechanical Engineers (ASME), 2007)This paper deals with the temporal stability of a Carreau fluid flow down an inclined plane. As a first step, a weakly non-Newtonian behavior is considered in the limit of very long waves. ... -
Assessment and Modification of One-Equation Models of Turbulence for Wall-Bounded Flows
(The American Society of Mechanical Engineers (ASME), 2007)This work assesses the performance of two single-equation eddy viscosity transport models that are based on Menter’s transformation of the k-ε and the k-ω closures. The coefficients of both ... -
Setup of a High-Speed Optical System for the Characterization of Flow Instabilities Generated by Cavitation
(The American Society of Mechanical Engineers (ASME), 2007)The present paper illustrates the setup and the preliminary results of an experimental investigation of cavitation flow instabilities carried out by means of a high-speed camera on a three-bladed ... -
Sensitivity of a Square Cylinder Wake to Forced Oscillations
(The American Society of Mechanical Engineers (ASME), 2007)The wake of a square cylinder at zero angle of incidence oscillating inline with the incoming stream has been experimentally studied. Measurement data are reported for Reynolds numbers of 170 ... -
Turbulent Jet Mixing Enhancement and Control Using Self-Excited Nozzles
(The American Society of Mechanical Engineers (ASME), 2007)A new self-excited jet methodology was developed for the mixing enhancement of jet fluid with its surrounding, quiescent, stagnant, or coflowing fluid. The nozzles, of a square or rectangular ... -
Dynamics and Intensity of Erosive Partial Cavitation
(The American Society of Mechanical Engineers (ASME), 2007)An experimental work has been carried out to investigate the dynamic behavior and the intensity of erosive partial cavitation on a 2-D hydrofoil. Both sheet (stable) and cloud (unstable) ... -
PIV Measurement of Separated Flow in a Square Channel With Streamwise Periodic Ribs on One Wall
(The American Society of Mechanical Engineers (ASME), 2007)In this study, particle image velocimetry (PIV) is used to investigate the physical process of separated flow in a square channel roughened with periodically transverse ribs on one wall. The ... -
Influence of Thermodynamic Effect on Synchronous Rotating Cavitation
(The American Society of Mechanical Engineers (ASME), 2007)Synchronous rotating cavitation is known as one type of cavitation instability, which causes synchronous shaft vibration or head loss. On the other hand, cavitation in cryogenic fluids has a ...