Journal of Fluids Engineering: Recent submissions
Now showing items 4061-4080 of 9024
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Taylor-Couette Instabilities in Flows of Newtonian and Power-Law Liquids in the Presence of Partial Annulus Obstruction
(The American Society of Mechanical Engineers (ASME), 2006)The flow inside a horizontal annulus due to the inner cylinder rotation is studied. The bottom of the annular space is partially blocked by a plate parallel to the axis of rotation, thereby ... -
Calculation of the Die Entry Flow of a Concentrated Polymer Solution Using Micro-Macro Simulations
(The American Society of Mechanical Engineers (ASME), 2006)A micro-macro simulation algorithm for the calculation of polymeric flow is developed and implemented. The algorithm couples standard finite element techniques to compute velocity and pressure ... -
Momentum Transfer Between Polydisperse Particles in Dense Granular Flow
(The American Society of Mechanical Engineers (ASME), 2006)We perform molecular dynamics (MD) simulations (based on the soft-sphere model) of a model dry granular system consisting of two types of spherical particles differing in size and/or density ... -
Swirling Flow of a Viscoelastic Fluid With Free Surface—Part I: Experimental Analysis of Vortex Motion by PIV
(The American Society of Mechanical Engineers (ASME), 2006)The swirling flows of water and CTAC (cetyltrimethyl ammonium chloride) surfactant solutions (50–1000ppm) in an open cylindrical container with a rotating disc at the bottom were experimentally ... -
Special Section on the Fluid Mechanics and Rheology of Nonlinear Materials at the Macro, Micro, and Nano Scale
(The American Society of Mechanical Engineers (ASME), 2006)This collection of selected papers are drawn from those presented at the IMECE 2004 in Anaheim, California at the Symposia “Rheology & Fluid Mechanics of Non-linear Materials,” “Advances in ... -
Controlled Nanoassembly and Construction of Nanofluidic Devices
(The American Society of Mechanical Engineers (ASME), 2006)This paper describes the combined use of controlled nanoassembly and microfabrication (photolithography) to construct multi-walled, carbon, nanotube-based fluidic devices. The nanoassembly technique ... -
Aspect Ratio Effects on Turbulent and Transitional Flow in Rectangular Microchannels as Measured With MicroPIV
(The American Society of Mechanical Engineers (ASME), 2006)Microscopic particle image velocimetry (microPIV) was used to measure velocities in rectangular microchannels with aspect ratios ranging from 0.97 to 5.69 for 200<Re<3267. Mean velocity ... -
The Growth of Surface Microcracks in Fatigue
(The American Society of Mechanical Engineers (ASME), 1969)An analytical theory is proposed for describing the growth of a small surface “microcrack” under uniaxial fatigue loading. The theory is based upon dimensional analysis and uses the stress-intensity ... -
Performance and Internal Flow Characteristics of a Very Low Specific Speed Centrifugal Pump
(The American Society of Mechanical Engineers (ASME), 2006)In very low specific speed range (ns<0.25), the efficiency of the centrifugal pump designed by the conventional method becomes remarkably low. Therefore, positive-displacement pumps have been ... -
Exit Flow Field and Performance of Axial Flow Fans
(The American Society of Mechanical Engineers (ASME), 2006)Flow fields near the exit and the global performance parameters of the various types of axial flow fans are studied with Particle Image Velocimetry and a standard AMCA 210 flow bench. The ... -
Flow in a Pelton Turbine Bucket: Numerical and Experimental Investigations
(The American Society of Mechanical Engineers (ASME), 2006)The aim of the paper is to present the results of investigations conducted on the free surface flow in a Pelton turbine model bucket. Unsteady numerical simulations, based on the two-phase ... -
Propulsion System Requirements for Long Range, Supersonic Aircraft
(The American Society of Mechanical Engineers (ASME), 2006)This paper discusses the requirements for the propulsion system of supersonic cruise aircraft that are quiet enough to fly over land and operate from civil airports, have trans-pacific range ... -
A Method to Predict Cavitation Inception Using Large-Eddy Simulation and its Application to the Flow Past a Square Cylinder
(The American Society of Mechanical Engineers (ASME), 2006)A new method to predict traveling bubble cavitation inception is devised. The crux of the method consists in combining the enhanced predictive capabilities of large-eddy-simulation (LES) for flow ... -
Thermal Cavitation Experiments on a NACA 0015 Hydrofoil
(The American Society of Mechanical Engineers (ASME), 2006)The present paper illustrates the main results of an experimental campaign conducted in the Thermal Cavitation Tunnel of the Cavitating Pump Rotordynamic Test Facility (CPRTF) at Centrospazio/Alta ... -
Numerical Calculation of Pressure Fluctuations in the Volute of a Centrifugal Fan
(The American Society of Mechanical Engineers (ASME), 2006)In this work, a numerical model has been applied in order to obtain the wall pressure fluctuations at the volute of an industrial centrifugal fan. The numerical results have been compared to ... -
Optimization of Plasma Spray Processing Parameters for Deposition of Nanostructured Powders for Coating Formation
(The American Society of Mechanical Engineers (ASME), 2006)When nanostructured powder particles are used for thermal spray coatings, the retention of the original nanostructure that is engineered into the raw stock is a principal objective, along with ... -
Development of a Second Generation In-Flight Icing Simulation Code
(The American Society of Mechanical Engineers (ASME), 2006)Two-dimensional and quasi-3D in-flight ice accretion simulation codes have been widely used by the aerospace industry for the last two decades as an aid to the certification process. The present ... -
The Periodical Shear Environment of a Cone-and-Plate Bioreactor
(The American Society of Mechanical Engineers (ASME), 2006)We investigate theoretically the periodic shear environment of a cone-and-plate bioreactor. The imposed frequency is designated to reflect the periodic nature of mammalian cardiac cycles. The ... -
Analysis of the Sutton Model for Aero-Optical Properties of Compressible Boundary Layers
(The American Society of Mechanical Engineers (ASME), 2006)In order to assess the capability of the Sutton model to evaluate aero-optical effects in a turbulent boundary layer, large-eddy simulation (LES) evolving spatially and Reynolds averaged Navier-Stokes ... -
Effects of Weak Free Stream Nonuniformity on Boundary Layer Transition
(The American Society of Mechanical Engineers (ASME), 2006)Experiments are described in which well-defined weak Free Stream Nonuniformity (FSN) is introduced by placing fine wires upstream of the leading edge of a flat plate. Large amplitude spanwise ...