Journal of Fluids Engineering: Recent submissions
Now showing items 3301-3320 of 9024
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Rotordynamic Moment on the Backshroud of a Francis Turbine Runner Under Whirling Motion
(The American Society of Mechanical Engineers (ASME), 2010)This paper addresses the rotordynamic instability of an overhung rotor caused by a hydrodynamic moment due to whirling motion through the structural coupling between whirl and precession modes. ... -
An Experimental Study of the Flow Around a Formula One Racing Car Tire
(The American Society of Mechanical Engineers (ASME), 2010)The wake of the front tires affects the airflow over the remainder of a fenderless race car. The tires can also be responsible for up to 40% of the vehicle’s drag. Prior experiments have ... -
PIV Study of Laminar Wall Jets of Non-Newtonian Fluids
(The American Society of Mechanical Engineers (ASME), 2010)Three-dimensional laminar wall jet flows of shear-thinning non-Newtonian fluids have been studied using a particle image velocimetry technique. The non-Newtonian fluids were prepared from xanthan ... -
Low Reynolds Number Flow in Spiral Microchannels
(The American Society of Mechanical Engineers (ASME), 2010)We study the creeping flow of an incompressible fluid in spiral microchannels such as that used in DNA identifying “lab-on-a-chip” installations. The equations of motion for incompressible, ... -
A Level Set Method Coupled With a Volume of Fluid Method for Modeling of Gas-Liquid Interface in Bubbly Flow
(The American Society of Mechanical Engineers (ASME), 2010)This paper describes the implementation of a 3D parallel and Cartesian level set (LS) method coupled with a volume of fluid (VOF) method into the commercial CFD code FLUENT for modeling the ... -
Developing Laminar Gravity-Driven Thin Liquid Film Flow Down an Inclined Plane
(The American Society of Mechanical Engineers (ASME), 2010)Three-dimensional (3D)—steady-developing-laminar-isothermal—and gravity-driven thin liquid film flow adjacent to an inclined plane is examined and the effects of film flow rate, surface tension, and ... -
A Methodology to Measure Aerodynamic Forces on Cylinders in Channel Flow
(The American Society of Mechanical Engineers (ASME), 2010)While the measurement of drag and lift forces on a body in external flow is common practice, the same cannot be said for aerodynamic forces on bodies in internal flows. The inherent difficulty ... -
Evaluation of a High Hub/Tip Ratio Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 1970)A centrifugal compressor stage with an unusually high inlet hub/tip ratio of 0.87 was designed for a pressure ratio of 2.0 at a corrected mass flow of 2.45 lb per sec. The geometry was ... -
Far-Field Boundary Condition Effects of CFD and Free-Wake Coupling Analysis for Helicopter Rotor
(The American Society of Mechanical Engineers (ASME), 2010)Rotor aerodynamics is governed by wake geometry and strength. However, rotor wake characteristics computed by the rotor computational fluid dynamics are not clearly described due to numerical ... -
Microscale Falling Cylinder Viscometer With Slip Boundary
(The American Society of Mechanical Engineers (ASME), 2010)This paper theoretically investigates the hydrodynamic behavior of a falling microcylinder viscometer. The Navier slip conditions are applied to all fluid/solid interfacial boundary conditions of ... -
Numerical Modeling and Analysis of Entrainment in Turbulent Jets After the End of Injection
(The American Society of Mechanical Engineers (ASME), 2010)Previous velocity and scalar measurements in both single-phase jets and two-phase diesel fuel sprays indicate that after the flow at the nozzle decelerates, ambient-gas entrainment increases ... -
The Peak Overpressure Field Resulting From Shocks Emerging From Circular Shock Tubes
(The American Society of Mechanical Engineers (ASME), 2010)A simple semi-empirical model for predicting the peak overpressure field that results when a shock emerges from a circular shock tube is presented and validated. By assuming that the shape of ... -
Scale-Up Correlation for the Flow of Surfactant-Based Fluids in Circular Coiled Pipes
(The American Society of Mechanical Engineers (ASME), 2010)This study involves experimental investigation on the flow properties of aqueous surfactant-based (SB) fluids in small and large-scale coiled tubing. It aims at understanding the viscoelastic ... -
Numerical Simulation of the Transient Flow in a Centrifugal Pump During Starting Period
(The American Society of Mechanical Engineers (ASME), 2010)Computational fluid dynamics were used to study the three-dimensional unsteady incompressible viscous flows in a centrifugal pump during rapid starting period (≈0.12 s). The rotational speed ... -
Transition of Mixtures of Polymers in a Dilute Aqueous Solution
(The American Society of Mechanical Engineers (ASME), 1970)Data are presented for the flow of deionized water solutions of linear, unbranched polymers—Separan AP-30, Polyox WSR-35 and Polyox WSR-301, and mixtures of the latter two in a 0.0235 in. tube. ... -
Mass Transfer in a Rigid Tube With Pulsatile Flow and Constant Wall Concentration
(The American Society of Mechanical Engineers (ASME), 2010)An approximate-analytical solution method is presented for the problem of mass transfer in a rigid tube with pulsatile flow. For the case of constant wall concentration, it is shown that the ... -
Patterns of Airflow in Circular Tubes Caused by a Corona Jet With Concentric and Eccentric Wire Electrodes
(The American Society of Mechanical Engineers (ASME), 2010)A computational investigation is conducted to study the patterns of airflow induced by corona discharge in the cross section of a circular tube. The secondary flow induced by corona wind in ... -
A Three-Dimensional Resolved Discrete Particle Method for Studying Particle-Wall Collision in a Viscous Fluid
(The American Society of Mechanical Engineers (ASME), 2010)Particle collisions with the walls are very important in understanding the fluid-particle behavior near the walls and determining the boundary conditions of the particulate phases in two-fluid ... -
Reynolds Number Dependence, Scaling, and Dynamics of Turbulent Boundary Layers
(The American Society of Mechanical Engineers (ASME), 2010)The past two decades (approximately 1990 to 2010) have witnessed an ever-quickening pace of new findings pertaining to the Reynolds number dependencies, scaling, and dynamics of turbulent boundary ... -
Critical Reynolds Number in Constant-Acceleration Pipe Flow From an Initial Steady Laminar State
(The American Society of Mechanical Engineers (ASME), 2010)The transition to turbulence in a constant-acceleration pipe flow from an initial laminar state was investigated in a custom-made apparatus permitting visual access to the water flow in the ...