Journal of Fluids Engineering: Recent submissions
Now showing items 2961-2980 of 9024
-
Computational Investigation of Liquid Spray Dispersion Modification by Conical Nozzle Attachments
(The American Society of Mechanical Engineers (ASME), 2011)Liquid spray characteristics such as the droplet size and dispersion angle are determined by the atomizer design and the physical properties of the liquid and surrounding gas. One of the options ... -
Fluid Flow in Trapezoidal Silicon Microchannels With 3D Random Rough Bottoms
(The American Society of Mechanical Engineers (ASME), 2011)In this paper, a bottom-up approach is used to construct random rough bottom walls for trapezoidal silicon microchannels with hydraulic diameters Dh from 47 μm to 241 μm. The top and side ... -
Lubrication of Highly Viscous Core-Annular Flows in Microfluidic Chambers
(The American Society of Mechanical Engineers (ASME), 2011)We investigate the lubrication transition of high-viscosity fluid threads flowing in sheaths of less viscous fluids, i.e., viscous core-annular flows, in microchannels. Focus is given on the flow ... -
Direct Numerical Simulation of Single and Multiple Square Jets in Cross-Flow
(The American Society of Mechanical Engineers (ASME), 2011)Direct numerical simulations (DNSs) have been carried out for single and multiple square jets issuing normally into a cross-flow, with the primary aim of studying the flow structures and ... -
Compound Triple Jets Film Cooling Improvements via Velocity and Density Ratios: Large Eddy Simulation
(The American Society of Mechanical Engineers (ASME), 2011)The flow hydrodynamic effects and film cooling effectiveness placing two small coolant ports just upstream the main jet (combined triple jets) were numerically investigated. Cross sections of all ... -
CFD Analysis of Gear Windage Losses: Validation and Parametric Aerodynamic Studies
(The American Society of Mechanical Engineers (ASME), 2011)A computational fluid dynamics (CFD) method has been applied to gear configurations with and without shrouding. The goals of this work have been to validate the numerical and modeling approaches ... -
Numerical Prediction of Flow Patterns in Bubble Pumps
(The American Society of Mechanical Engineers (ASME), 2011)In the present study, the ammonia-water mixing flow in a bubble pump is numerically simulated. The flow patterns of a two-phase flow in a bubble pump were studied under different conditions ... -
Uncertainty Quantification of Turbulence Model Coefficients via Latin Hypercube Sampling Method
(The American Society of Mechanical Engineers (ASME), 2011)The article is concerned with the propagation of uncertainties in the values of turbulence model coefficients and parameters in turbulent flows. These coefficients and parameters are obtained ... -
Detached Eddy Simulation of Atmospheric Flow About a Surface Mounted Cube at High Reynolds Number
(The American Society of Mechanical Engineers (ASME), 2011)Modeling high Reynolds number (Re) flow is important for understanding wind loading on structures, transport and dispersion of airborne contaminants, and turbulence patterns in urban areas. This ... -
Application of Nonlinear Turbulence Models for Marine Propulsors
(The American Society of Mechanical Engineers (ASME), 2011)The realistic simulation of cavitation on a marine propeller is important for the efficient design of the propeller. However, the flow characteristic that occurred on the marine propeller is ... -
Mathematical Analysis for Off-Design Performance of Cryogenic Turboexpander
(The American Society of Mechanical Engineers (ASME), 2011)A study has been conducted to determine the off-design performance of cryogenic turboexpander. A theoretical model to predict the losses in the components of the turboexpander along the fluid ... -
Drive Characteristics of Viscous Oil Film Considering Temperature Effect
(The American Society of Mechanical Engineers (ASME), 2011)Taking account of temperature and the effect of pressure difference and inertia force on oil film, the analytic solutions for pressure, radial velocity, and transferred torque were derived. The ... -
The Effect of Nonuniform Viscosity on Stagnation Point Pressure
(The American Society of Mechanical Engineers (ASME), 2011)For high Reynolds number flows the total pressure remains constant along stream lines. At low Reynolds numbers the total pressure decreases in a global sense due to the actions of viscosity, ... -
Mechanical Inhibition of Foam Formation via a Rotating Nozzle
(The American Society of Mechanical Engineers (ASME), 2011)We recently discovered that bubble formation can be substantially prevented when an aqueous solution is sprayed into a bath of the same solution provided that any two consecutive drops impacting ... -
Solid-Liquid Two-Phase Flow Measurement Using an Electromagnetically Induced Signal Measurement Method
(The American Society of Mechanical Engineers (ASME), 2011)An electromagnetically induced signal measurement method is presented to measure solid-liquid two-phase flows in the present study. The method is validated by comparing visualization results for ... -
Frictional Loss Studies and Experimental Performance of a New Synchronal Rotary Multiphase Pump
(The American Society of Mechanical Engineers (ASME), 2011)A new synchronal rotary multiphase pump (SRMP) is presented, which is geometrically simple and easy to manufacture. With the rotary cylinder, the frictional losses between the major components ... -
Computational Fluid Dynamic Studies of Vortex Amplifier Design for the Nuclear Industry—I. Steady-State Conditions
(The American Society of Mechanical Engineers (ASME), 2011)In this study the effects of changes to the geometry of a vortex amplifier are investigated using computational fluid dynamics (CFD) techniques, in the context of glovebox operations for the ... -
Application of the Euler–Lagrange Method to Model Developed Hydrodynamic Slugs in Conduits
(The American Society of Mechanical Engineers (ASME), 2011)Hydrodynamic slugging occurs frequently in nature and in various industrial systems. Under certain circumstances, a mechanistic approach to study such flows is possible and the Euler–Lagrange ... -
Flow Past a Rotating Cylinder at Low and High Rotation Rates
(The American Society of Mechanical Engineers (ASME), 2011)Flow past a rotating circular cylinder is studied experimentally. The experiments are carried out in a water tunnel at Reynolds numbers of 200, 300, and 400 and nondimensional rotation rates ... -
Theoretical, Numerical, and Experimental Study of the Time of Flight Flowmeter
(The American Society of Mechanical Engineers (ASME), 2011)Time-of-flight flowmeters offer advantages over other flowmeter types since these are less sensitive to the physical properties of the fluid. However, calibration of the flowmeter for a particular ...