Journal of Fluids Engineering: Recent submissions
Now showing items 381-400 of 9024
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On the Stability and Control of Two-Dimensional Channel Flow
(The American Society of Mechanical Engineers (ASME), 2023)A direct numerical simulation is used to solve the two-dimensional plane Poiseuille flow for three different stability cases; specifically, they are a supercritical case at a Reynolds number of 10,000, a critical-stable ... -
A Study of the Velocity Field During Mitigation of Vortex Breakdown in Model Francis Turbine at High Load
(The American Society of Mechanical Engineers (ASME), 2023)Off-design operation leads to the development of flow instabilities like vortex breakdown phenomenon which manifests as an enlarged vortex core in the draft tube at high load operating conditions. These flow instabilities ... -
Reviewer's Recognition
(The American Society of Mechanical Engineers (ASME), 2023)The Reviewers of the Year Award is given to reviewers who have made an outstanding contribution to the journal in terms of the quantity, quality, and turnaround time of reviews completed during the past 12 months. The prize ... -
Large Eddy Simulations of Turbulent Gas-Liquid Flows in a Diverging Horizontal Channel Using a Hybrid Multiphase Approach
(The American Society of Mechanical Engineers (ASME), 2022)Centrifugal pumps conveying gas–liquid flows are often designed based on pure liquid flows due to limited understanding of gas formations within a gas–liquid flow. Computational fluid dynamics (CFD) can provide insights ... -
Numerical Simulation of Hit Noise Generation Due to Sloshing Phenomenon in a Rectangular Tank Under Periodic Excitation
(The American Society of Mechanical Engineers (ASME), 2022)Sloshing in fuel tanks is one of the major sources of noise in hybrid and high-end vehicles. During sloshing, the fluid causes impacts on tank walls resulting in their vibration, which further leads to noise, referred to ... -
Large Eddy Simulation of Transitional Separated Flow Over a Low Reynolds Number Cambered Airfoil
(The American Society of Mechanical Engineers (ASME), 2022)The accurate simulation of the aerodynamic behavior of low Reynolds number (Re) cambered airfoils requires the ability to capture the transitional separated boundary layer (BL) that occurs naturally on the surface of the ... -
Stability Characteristics of Planar Rivlin–Ericksen Fluid Interface With Mass and Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2022)The interface of viscous-Rivlin-Ericksen fluids is analyzed through the linear theory of stability analysis when mass and heat is transferring across the interface. The Rivlin-Ericksen fluid lies in the upper region while ... -
Theoretical Solution for Fully Developed Laminar Flow in a Noncircular Duct
(The American Society of Mechanical Engineers (ASME), 2022)In this study, the friction factor of a fully developed laminar flow in a noncircular duct, which is used in an automotive cooler system, is investigated. The Poisson equation of velocity with homogeneous boundary conditions ... -
Coherent Flow Structures Near Tongue Region in a Centrifugal Fan With Forward-Curved Blades
(The American Society of Mechanical Engineers (ASME), 2022)The unsteady characteristics of the velocity field around the tongue of the volute in a centrifugal fan with forward-curved blades were investigated by time-resolved particle image velocimetry and mode decomposition analysis, ... -
Effects of Clearance and Operating Conditions on Tip Leakage Vortex-Induced Energy Loss in an Axial-Flow Pump Using Entropy Production Method
(The American Society of Mechanical Engineers (ASME), 2022)Tip leakage flow (TLF) is a typical flow phenomenon in the internal flow of axial-flow pumps that has a serious impact on their safety and stability. In this study, numerical simulations are performed to investigate the ... -
Effect of Base Fluids on the Initiation of Vortex Shedding for Nanofluid Flow Over a Circular Object
(The American Society of Mechanical Engineers (ASME), 2022)An inherently steady separated flow of a nanofluid around a two-dimensional circular object can be transformed into an unsteady periodic flow by controlling the nanoparticle concentration. This has been established in the ... -
A Modified Dissipation Equation for Reynolds Stress Turbulent Mixing Models
(The American Society of Mechanical Engineers (ASME), 2022)A simple modification of the dissipation equation is proposed for augmented Reynolds stress models (RSM) devoted to the prediction of buoyancy-driven turbulent mixing at interfaces. It is based on the partition of the ... -
A Machine Learning Approach to Predicting Unsteady Transonic Flow of Pitching Airfoils1
(The American Society of Mechanical Engineers (ASME), 2022)A machine learning methodology has been proposed in this paper to study the unsteady transonic aerodynamics in the flutter regime. The methodology is based on a well-established regularization technique, and it compares ... -
Noninvasive Imaging of a Liquid Jet
(The American Society of Mechanical Engineers (ASME), 2022)Liquid jets are found in many applications, from printing to manufacturing to entertainment. This study uses three different noninvasive imaging modalities to compare resulting images of a liquid jet operating at three ... -
Bubble Size Distribution Dependence on Liquid Viscosity and Gas Flowrate Within a Bubble Column With a Porous Sparger
(The American Society of Mechanical Engineers (ASME), 2022)Bubble size distributions within the homogeneous and heterogeneous regimes were experimentally investigated with varying gas superficial velocity and viscosity. Air was bubbled into aqueous solutions of glycerin (concentrations ... -
Behavior of Gas Entrainment Inside Viscous Pool Due to Combined Influence of Symmetric Rotational Field and Freestream Flow of Air
(The American Society of Mechanical Engineers (ASME), 2022)The present investigation elucidates the interfacial characterization caused by the simultaneous effect of a symmetric converging rotational field and continuous air stream flow above the free surface. The converging ... -
Gaseous Entrainment Dynamics in a Viscous Pool Due to Combined Influence of Asymmetric Rotational Field and Crossflow of Air
(The American Society of Mechanical Engineers (ASME), 2022)Efforts are made to perform simulations to describe the gaseous entrainment dynamics in a viscous liquid pool due to the combined influence of asymmetric converging rotational field and continuous freestream flow of air. ... -
Experimental and Numerical Investigation of Bio-Inspired Riblet for Drag Reduction
(The American Society of Mechanical Engineers (ASME), 2022)Flow alteration using the bio-inspired riblet structure is a fascinating field of study resulting in drag benefits. Riblets have no power requirement being a passive method. This work aims to study the effect of riblets ... -
Onset of Flow Separation Phenomenon in a Low-Specific Speed Centrifugal Pump Impeller
(The American Society of Mechanical Engineers (ASME), 2022)The efficiency of centrifugal pumps drops sharply when the flowrate is reduced below a threshold value. This is due to a profound change in the flow structure, characterized by a large of portion flow separation near the ... -
Influence Mechanism of Trimming Impeller Diameter in a Centrifugal Pump by Computational Fluid Dynamics Investigation
(The American Society of Mechanical Engineers (ASME), 2022)Trimming the impeller diameter of a centrifugal pump is the easiest and most economical way to adjust its efficient operating range based on its original performance. Three impellers obtained by trimming the diameter are ...