Journal of Fluids Engineering: Recent submissions
Now showing items 1061-1080 of 9024
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Cloud Cavitation Behavior on a Hydrofoil Due to Fluid-Structure Interaction
(The American Society of Mechanical Engineers (ASME), 2019)Despite recent extensive research into fluid–structure interaction (FSI) of cavitating hydrofoils, there remain insufficient experimental data to explain many of the observed phenomena. The cloud cavitation behavior around ... -
Film Size During Bubble Collision With a Solid Surface
(The American Society of Mechanical Engineers (ASME), 2019)The impact and bounce of a bubble with a solid surface is of significant interest to many industrial processes such as froth flotation and biomedical engineering. During the impact, a liquid film becomes trapped between ... -
Multiphase Sloshing and Interfacial Wave Interaction With a Baffle and a Submersed Block
(The American Society of Mechanical Engineers (ASME), 2019)A numerical model of a rectangular tank containing a layered liquid is modeled for studying layered sloshing wave. The Arbitrary Lagrangian Eulerian method is used to track the development for both the interfacial and free ... -
Rayleigh–Taylor Instability of Swirling Annular Layer With Mass Transfer
(The American Society of Mechanical Engineers (ASME), 2019)The interfacial instability of Rayleigh–Taylor type at the cylindrical boundary involving the liquid phase and vapor phase of a fluid has been considered when the vapor is warmer than the liquid. We use viscous potential ... -
Experimental Investigation of Nozzle Spacing Effects on Characteristics of Round Twin Free Jets
(The American Society of Mechanical Engineers (ASME), 2019)The objective of this paper is to investigate the effects of nozzle spacing on the mean velocity and higher-order turbulent statistics of free twin round jets produced from sharp contraction nozzles. The experiments were ... -
Drone Scale Coaxial Rotor Aerodynamic Interactions Investigation
(The American Society of Mechanical Engineers (ASME), 2019)Coaxial rotor uninhabited aerial vehicles (UAVs) are compact compared to single rotor UAVs of comparable capacity. At the low Reynolds numbers (Re) where they operate, the simplifying assumptions from high Re rotor ... -
Vibration-Enhanced Droplet Motion Modes: Simulations of Rocking, Ratcheting, Ratcheting With Breakup, and Ejection
(The American Society of Mechanical Engineers (ASME), 2019)Power plant water usage is a coupling of the energy–water nexus; this research investigates water droplet motion, with implications for water recovery in cooling towers. Simulations of a 2.6 mm-diameter droplet motion on ... -
Methodology of Turbulence Parameter Correction in Water-Lubricated Thrust Bearings
(The American Society of Mechanical Engineers (ASME), 2019)Oil-lubricated bearings are widely used in high-speed rotating machines such as those found in automotive industries and aerospace. However, environmental issues and risk-averse operations are resulting in the removal of ... -
Effects of Downstream Structures on Aero Elastic Energy Harvesters From Wake-Induced Vibration
(The American Society of Mechanical Engineers (ASME), 2019)An upstream cylindrical bluff body connected to a tip body via an aluminum cantilever beam was tested as energy harvester in a wind tunnel. The characteristics and behavior of the different tip body configurations and ... -
Developing Swirl Boundary Layer and Flow Separation at the Inlet of a Coaxial Rotating Diffuser or Nozzle
(The American Society of Mechanical Engineers (ASME), 2019)When an axial flow enters a rotating diffuser or nozzle, a swirl boundary layer appears at the wall and interacts with the axial boundary layer. Below a critical flow number φc, there is a flow separation, known in the ... -
Experimental Analysis of Cavitation Phenomena on Kaplan Turbine Blades Using Flow Visualization
(The American Society of Mechanical Engineers (ASME), 2019)In this study, a comparison of two different Kaplan turbine runners with differently shaped turbine blades was performed. The two turbines differed in the selection of the hydrofoil, the main hydrofoil parameters of which ... -
Near-Wake Observations behind Azimuthally Perforated Disks With Varying Hole Layout and Porosity in Smooth Airstreams at High Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2019)Porous disks are commonly encountered in experimental studies dealing with flow through objects such as wind turbines, parachutes, and fluidic devices to regulate pressure and/or downstream turbulence. Perforations are ... -
Influence of Guide Ring on Energy Loss in a Multistage Centrifugal Pump
(The American Society of Mechanical Engineers (ASME), 2019)Multistage centrifugal pumps are highly efficient and compact in structure. Pump efficiency can be improved by an effective understanding of hydraulic behavior and energy loss, however, the traditional hydraulic loss ... -
Development of a New Contact Angle Control Algorithm for Level-Set Method
(The American Society of Mechanical Engineers (ASME), 2019)A contact angle control algorithm is developed and implemented in the multiphase interface tracking flow solver—phasta. The subgrid force model is introduced to control the evolving contact angle. The contact angle force ... -
An Experimental Investigation of the Surface Pressure Fluctuations for Round Cylinders
(The American Society of Mechanical Engineers (ASME), 2019)An experimental study is carried out to investigate the unsteady pressure exerted on the surface of a round cylinder in the subcritical Reynolds number range. Results are presented for the surface pressure fluctuations, ... -
On Dynamics of Acoustically Driven Bistable Fluidic Valves
(The American Society of Mechanical Engineers (ASME), 2019)The dynamics of an actively controlled fluidic diverter with novel actuation method are presented. This bistable fluidic valve is based on the Coanda effect and is able to switch the main flow solely by means of acoustic ... -
A Generalized Procedure for Pipeline Hydraulic Components in Quasi-Two-Dimensional Unsteady Flow Analysis
(The American Society of Mechanical Engineers (ASME), 2019)Quasi-two-dimensional (2D) modeling of unsteady flow is important for the accurate prediction of flow and pressure in pipeline systems. In this study, a generalized method is developed to consider various inline components ... -
Optimization of Biomimetic Propulsive Kinematics of a Flexible Foil Using Integrated Computational Fluid Dynamics–Computational Structural Dynamics Simulations
(The American Society of Mechanical Engineers (ASME), 2019)A computational methodology, which combines a computational fluid dynamics (CFD) technique and a computational structural dynamics (CSD) technique, is employed to design a deformable foil whose kinematics is inspired by ... -
Energy Concentration by Bluff Bodies—A Particle Image Velocimetry Investigation
(The American Society of Mechanical Engineers (ASME), 2019)Particle image velocimetry (PIV) of four cylinders with different cross sections were performed in a recirculating water channel at Reynolds numbers of 5000 and 10,000. The cylinders were split into two distinct categories; ... -
Computational Fluid Dynamics Flow Simulations in Discrete Element Method-Resolved Packed Beds
(The American Society of Mechanical Engineers (ASME), 2019)This paper presents computational simulations of flows in packed beds and compares the computational pressure-drop results with those given by the Ergun correlation. The computational methodology used in this work follows ...