Journal of Fluids Engineering: Recent submissions
Now showing items 1101-1120 of 9024
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Effect of Sand Bed Deposits on the Characteristics of Turbulent Flow of Water in Horizontal Annuli
(The American Society of Mechanical Engineers (ASME), 2019)An experimental program was conducted to investigate turbulent flow of water over the stationary sand bed deposited in horizontal annuli. A large-scale horizontal flow loop equipped with the state-of-the-art particle image ... -
Assessment of Computational Fluid Dynamic for Surface Combatant 5415 at Straight Ahead and Static Drift β = 20 deg
(The American Society of Mechanical Engineers (ASME), 2019)Collaboration is described on assessment of computational fluid dynamics (CFD) predictions for surface combatant model 5415 at static drift β = 0 deg and 20 deg using recent tomographic particle image velocimetry (TPIV) ... -
Investigations of Inducers Operating With High Rotational Speed
(The American Society of Mechanical Engineers (ASME), 2019)Suction performance, pressure rise, and efficiency for four different inducers are examined with computational fluid dynamics (CFD) simulations and experiments performed with 18,000 rpm and 24,000 rpm. The studies originate ... -
Numerical and Experimental Investigation of the Cavitating Flow Within Venturi Tube
(The American Society of Mechanical Engineers (ASME), 2019)Hydrodynamic cavitation represents complex physical phenomenon undesirably affecting operation as well as lifespan of many hydraulic machines from small valves to the large hydro power plants. On the other hand, the same ... -
Drift-Flux Correlation of Oil–Water Flow in Horizontal Channels
(The American Society of Mechanical Engineers (ASME), 2019)An accurate and practical approach is necessary for predicting oil fraction in horizontal oil–water flows. In this study, a concept of a drift-flux model is adopted to develop a predictive method for the oil fraction in ... -
Experimental Investigation on the Motion of Particle Cloud in Viscous Fluids
(The American Society of Mechanical Engineers (ASME), 2019)Laboratory experiments were conducted to study the dynamics of particle clouds in viscous fluids. Different shapes of frontal head and trailing stems were observed, and particle clouds were classified using data mining ... -
The Percolation of Liquid Through a Compliant Seal—An Experimental and Theoretical Study
(The American Society of Mechanical Engineers (ASME), 2019)New apparatus is described to simulate a compliant seal interface, allowing the percolation of liquid to be viewed by a fluorescence microscope. A model, based on the boundary element (BE) methodology, is used to provide ... -
Effect of RANS Method on the Stall Onset Prediction by an Eigenvalue Approach
(The American Society of Mechanical Engineers (ASME), 2019)The eigenvalue approach is a recently developed compressor stability model used to predict stall onset. In this model, the flow field from a Reynolds-averaged Navier–Stokes (RANS) simulation provides the basic flow. This ... -
Effect of Metallization on the Electromechanical Properties of Microfluidically Synthesized Hydrogel Beads
(The American Society of Mechanical Engineers (ASME), 2019)This investigation demonstrates that metallization can be used to tailor the electromechanical properties of polymer beads. Rigid ion exchange resin beads and softer microfluidically synthesized polyionic liquid hydrogel ... -
A Small Disturbance Model for Transonic Flow of Pure Steam With Condensation
(The American Society of Mechanical Engineers (ASME), 2019)A small-disturbance model to study transonic steady condensing flow of pure steam around a thin airfoil is developed. Water vapor thermodynamics is described by the perfect gas model and its dynamics by the compressible ... -
Comparative Studies of RANS Versus Large Eddy Simulation for Fan–Intake Interaction
(The American Society of Mechanical Engineers (ASME), 2019)The present research applied a mixed-fidelity approach to examine the fan–intake interaction. Flow separation induced by a distortion generator (DG) is either resolved using large eddy simulation (LES) or modeled using the ... -
Experimental and Numerical Investigation on Flow Characteristics of Large Cross-Sectional Ionic Wind Pump With Multiple Needles-to-Mesh Electrode
(The American Society of Mechanical Engineers (ASME), 2019)Ionic wind pumps have attracted considerable interest because of their low energy consumption, compact structures, flexible designs, and lack of moving parts. However, large cross-sectional ionic wind pumps have yet to be ... -
Investigating the Mixing Efficiencies of Liquid-to-Liquid Chemical Injection Manifolds for Aquatic Invasive Species Management
(The American Society of Mechanical Engineers (ASME), 2019)Aquatic invasive species (AIS) have spread throughout the United States via major rivers and tributaries. Locks and dams positioned along affected waterways, specifically lock chambers, are being evaluated as potential ... -
Investigation of the Motion of Bubbles in a Centrifugal Pump Impeller
(The American Society of Mechanical Engineers (ASME), 2019)Centrifugal pumps operate below their nominal capacity when handling gas–liquid flows. This problem is sensitive to many variables, such as the impeller speed and the liquid flow rate. Several works evaluate the effect of ... -
Siting Wind Turbines Near Cliffs: The Effect of Ruggedness
(The American Society of Mechanical Engineers (ASME), 2019)Wind farms have often been located in close proximity to coastal cliffs to take advantage of the consistent wind regimes associated with many coastal regions, as well as to extract any available increase in flow speed that ... -
Effects of Flow Coefficient on Miniature Centrifugal Pump Performance
(The American Society of Mechanical Engineers (ASME), 2019)In order to help the design of miniature centrifugal pumps, the design method for macrosize centrifugal pumps is reviewed and the critical parameter, the flow coefficient, is examined in this paper for the miniature ... -
Unsteady Flow of Power Law Fluids With Wall Slip in Microducts
(The American Society of Mechanical Engineers (ASME), 2019)Unsteady laminar nonlinear slip flow of power law fluids in a microchannel is investigated. The nonlinear partial differential equation resulting from the momentum balance is solved with linear as well as nonlinear boundary ... -
Two-Phase Fluid Modeling of Magnetic Drug Targeting in a Permeable Microvessel Implanted With a Toroidal Permanent Magnetic Stent
(The American Society of Mechanical Engineers (ASME), 2019)The key to effective magnetic drug targeting (MDT) is to improve the aggregation of magnetic drug carrier particles (MDCPs) at the target site. Compared to related theoretical models, the novelty of this investigation is ... -
Optimal Control of Part Load Vortex Rope in Francis Turbines
(The American Society of Mechanical Engineers (ASME), 2019)The mitigation of the precessing vortex core developing in the draft tube of Francis turbines operating under part load conditions is crucial to increase the operation flexibility of these hydraulic machines to balance the ... -
Analysis of the Runner Behavior During the Start-Up Sequence in a Bulb Turbine Model
(The American Society of Mechanical Engineers (ASME), 2019)An experimental analysis of the start-up sequence of a bulb turbine was performed in a closed-loop circuit, and analyses of global performances were conducted under three start-up conditions. In order to conduct a deeper ...