Journal of Fluids Engineering: Recent submissions
Now showing items 641-660 of 9024
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Simulation of Flow Through Variable Permeability Darcy–Brinkman Layers
(The American Society of Mechanical Engineers (ASME), 2021)In this paper, coupled parallel flow in a triple layer channel is studied numerically. The channel consists of a clear fluid sandwiched between two Darcy–Brinkman permeable layers of variable porousness. A single binary ... -
Motility Response to Hydrodynamic Stress During the Growth Cycle in Active Fluid Suspensions
(The American Society of Mechanical Engineers (ASME), 2021)In this work, we focus on the motility behavior of two model micro-organisms widely used in the study of active fluids: Chlamydomonas reinhardtii micro-alga and Synechocystis sp. cyanobacterium. Understanding the physiological ... -
Boundary Vorticity Analysis and Shedding Dynamics of Transient Cavitation Flow Around a Twisted Hydrofoil
(The American Society of Mechanical Engineers (ASME), 2021)The objective of this paper is to investigate the dynamic characteristics of transient cavitating flow over a twisted NACA0009 hydrofoil. The large eddy simulation (LES) approach is selected for the computation of fluid ... -
Sliding Dynamics of a Water Droplet on Silicon Oil Film Surface
(The American Society of Mechanical Engineers (ASME), 2021)A sliding droplet over the silicon oil film is examined and the dynamics of droplet motion are explored. The solution crystallized wafer surfaces are silicon oil impregnated and the uniform thickness oil film is realized. ... -
The Role of Slip and No Slip Behavior on Droplet Impingement
(The American Society of Mechanical Engineers (ASME), 2021)For the identification of role of slip and no slip conditions at the solid–liquid interface in case of hydrophobic, superhydrophilic, and superhydrophobic surfaces, the experimentally determined velocity profiles are ... -
A High Resolution Simulation of a Single Shock-Accelerated Particle
(The American Society of Mechanical Engineers (ASME), 2021)Particle drag models, which capture macroviscous and pressure effects, have been developed over the years for various flow regimes to enable cost effective simulations of particle-laden flows. The relatively recent derivation ... -
Mobilities of a Spherical Particle Straddling the Interface of a Semi-Infinite Brinkman Flow
(The American Society of Mechanical Engineers (ASME), 2021)The motion of a spherical particle straddling the flat interface of a semi-infinite Brinkman flow is considered under the conditions of low Reynolds number and zero capillary number regime. The analysis is applied in the ... -
Large Eddy Simulation Investigations of Periodic Cavitation Shedding With Special Emphasis on Three-Dimensional Asymmetry in a Scaled-Up Nozzle Orifice
(The American Society of Mechanical Engineers (ASME), 2021)The periodic shedding of cloud cavitation in a nozzle orifice has a significant influence on the flow field and may have destructive effects. Most of the existing research on the shedding of cloud cavitation in an orifice ... -
The Effects of Upstream Wall Roughness on the Spatio-Temporal Characteristics of Flow Separations Induced by a Forward-Facing Step
(The American Society of Mechanical Engineers (ASME), 2021)Separating and reattaching turbulent flows induced by a forward-facing step submerged in thick oncoming turbulent boundary layers (TBL) developed over smooth and rough upstream walls were investigated using time-resolved ... -
Effect of Rear Wing on Time-Averaged Ground Vehicle Wake With Variable Slant Angle
(The American Society of Mechanical Engineers (ASME), 2021)The slant angle plays a crucial role in the flow property of hatchback ground vehicles. An optimum slant angle is obligatory for better handling the ground vehicles when fitted with a rear wing. In this regard, the variation ... -
Study on Performance Enhancement of a Flapping Foil Energy Harvester Using Circulation Control
(The American Society of Mechanical Engineers (ASME), 2021)Oscillating motion, an effective way to harvest energy, has gradually become a hotspot in bionic motion research in recent years. Means of improving the energy-extraction efficiency of a flapping foil harvester have long ... -
Experimental Investigation of Leakage in the Modified Revolving Vane Expander
(The American Society of Mechanical Engineers (ASME), 2021)This study focuses on the leakage characteristics of a modified revolving vane expander (M-RVE) using both static and dynamic leakage analysis. The no-expansion scenario showed a maximum volumetric efficiency of 18.7% was ... -
Development of High-Efficient Centrifugal Pump Through Optimization of Its Volute Tongue and Expeller Vane
(The American Society of Mechanical Engineers (ASME), 2021)Centrifugal pumps are often used for pumping liquids from one priority area to another, which require working effectively in terms of performance and reliability. The objective of this study is to enhance the hydraulic ... -
Pressure Drop, Air Entrainment, and Moments of the Axial Velocity in the Laminar-Turbulent Transition Jet Flow in Domestic Gas Injectors
(The American Society of Mechanical Engineers (ASME), 2021)This work aims at characterizing the flow in the outlet of three gas injectors used in atmospheric burners and developing correlations for the discharge coefficient, air entrainment, momentum, and energy flow rates. These ... -
Fluid Dynamics of a Bistable Diverter Under Ultrasonic Excitation—Part II: Flow Visualization and Fundamental Mechanisms
(The American Society of Mechanical Engineers (ASME), 2021)The switching mechanism and underlying flow physics of an actively controlled fluidic device are investigated using both large eddy simulation (LES) and particle imaging velocimetry (PIV). The fluidic device considered ... -
Fluid Dynamics of a Bistable Diverter Under Ultrasonic Excitation—Part I: Performance Characteristic
(The American Society of Mechanical Engineers (ASME), 2021)This paper investigates an ultrasonically driven bistable fluidic diverter at inlet nozzle Mach numbers of up to Mn = 0.3 and operating pressure ratios of up to Pr = 1.1. Part I examines the switching characteristics with ... -
Impact of Rotational Speed on Turbocharger Compressor Surge Through Particle Image Velocimetry1
(The American Society of Mechanical Engineers (ASME), 2021)Stereoscopic particle image velocimetry is used to characterize the variation of the turbocharger compressor inlet velocity field as a function of rotational speed, with an emphasis on surge. While the velocity magnitudes ... -
Investigation on Variations of Void Fraction in a Subcooled Boiling Channel Under Vertical Forced Excitations
(The American Society of Mechanical Engineers (ASME), 2021)Experimental tests were carried out to investigate the vertically forced excitation effects on the subcooled boiling flow. The heated circular channel with an inner diameter of 11.9 mm was operated with various heat fluxes ... -
Enhancing Cryogenic Cavitation Prediction Through Incorporating Modified Cavitation and Turbulence Models
(The American Society of Mechanical Engineers (ASME), 2021)Cavitating flow prediction is essential for designing cavitation-resistant hydraulic machines. Despite the advances achieved in normal-temperature cavitation prediction, cryogenic cavitation prediction has remained a ... -
Evaluation of Length Scales and Meshing Requirements for Resolving Two-Phase Flow Regime Transitions Using the Level Set Method
(The American Society of Mechanical Engineers (ASME), 2021)New criteria for fully resolving two-phase flow regime transitions using direct numerical simulation with the level set method for interface capturing are proposed. A series of flows chosen to capture small scale interface ...