Journal of Fluids Engineering: Recent submissions
Now showing items 141-160 of 8892
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Orifice Jet Curvature and Its Interaction With a Row of Short Pin-Fins
(The American Society of Mechanical Engineers (ASME), 2024)The fluidic behaviors and interactions present in a setup utilizing perforated blockages and downstream pin-fin are elucidated: specifically, the role of jet curvature in flow interactions and the interaction of end-wall ... -
Instability of Poiseuille Flow in a Bidisperse Porous Medium Subject to a Uniform Vertical Throughflow Effect
(The American Society of Mechanical Engineers (ASME), 2024)In this article, we investigate the influence of the vertical throughflow Reynolds number on the instability of Poiseuille flow in a bidisperse porous medium. The Brinkman model was employed to describe fluid flow in the ... -
The Effect of Curved Geometry on Exiting Flow of Fluidic Oscillators
(The American Society of Mechanical Engineers (ASME), 2024)Traditionally fluidic oscillators are designed to be planar. However, there are applications that may desire the exiting fluid to move in the third dimension. This could allow these oscillators to be more effective in ... -
The Effects of Rotation and Solidity on the Aerodynamic Behavior of Low-Pressure Axial Flow Fans
(The American Society of Mechanical Engineers (ASME), 2024)Implicit axial flow fan models are commonly used for the numerical analysis of industrial heat exchanger systems. However, these fan models perform poorly within the often complex off-design flow environments characteristic ... -
Aerodynamic Analysis of Low-Pressure Axial Fans Installed in Parallel
(The American Society of Mechanical Engineers (ASME), 2024)Ducted rotor-only low-pressure axial fans play an integral role in automotive thermal management. The tightly packed under-hood region and down-stream heat-exchanger shape limit the fan diameter. In order to circumvent ... -
Interstage Performance and Power Consumption of a Multistage Mixed-Flow Electrical Submersible Pump in Gas–Liquid Conditions: An Experimental Study
(The American Society of Mechanical Engineers (ASME), 2024)The performance degradation of electrical submersible pump (ESP) caused by high gas volume fraction (GVF) has always been a common problem in the field of oil and gas production. Experiments are conducted to investigate ... -
Aerodynamics and Flowfield of Distributed Electric Propulsion Tiltwing During Transition With Deflected Trailing-Edge Flap
(The American Society of Mechanical Engineers (ASME), 2024)The aerodynamics and flowfield of a rectangular semiwing equipped with four four-bladed propellers and a 40%-chord full-span plain trailing-edge flap were investigated by using force balance and particle image velocimetry ... -
Energy Contribution Study of Blade Cavitation Control by Obstacles in a Waterjet Pump Based on mPOD and EEMD
(The American Society of Mechanical Engineers (ASME), 2024)It has been confirmed that the passive obstacles would substantially depress the leading-edge cavitation in a waterjet pump. Combined with the experiments and numerical simulations, this work revisits blade cavitation ... -
Effects of Blockage Ratio on the Spatiotemporal Dynamics of Turbulent Flow Separation Around a Square Cylinder at Moderate Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2024)The effects of blockage ratio (BR) on turbulent flows around square cylinders at moderate Reynolds numbers are investigated using a time-resolved particle image velocimetry (TR-PIV). The blockage ratios range from 2.5% to ... -
Plume Spreading Due to Floor Conditions of a Plunging Liquid Jet Using Stereographic Backlit Imaging
(The American Society of Mechanical Engineers (ASME), 2024)Plunging liquid jets are a multiphase flow studied to understand how gas is entrained in a liquid and the resulting mixing capabilities. From existing literature, it has been hypothesized that rising bubbles play a noticeable ... -
Energy Exascale Computational Fluid Dynamics Simulations With the Spectral Element Method
(The American Society of Mechanical Engineers (ASME), 2024)Development and application of the open-source GPU-based fluid-thermal simulation code, NekRS, are described. Time advancement is based on an efficient kth-order accurate timesplit formulation coupled with scalable iterative ... -
Exascale Computational Fluid Dynamics in Heterogeneous Systems
(The American Society of Mechanical Engineers (ASME), 2024)Exascale computing has extended the reach of resolved flow simulations in complex, heterogeneous systems far beyond conventional computational fluid dynamics capabilities. As a result, unprecedented pore and microscale ... -
PeleMP: The Multiphysics Solver for the Combustion Pele Adaptive Mesh Refinement Code Suite
(The American Society of Mechanical Engineers (ASME), 2024)Combustion encompasses multiscale, multiphase reacting flow physics spanning a wide range of scales from the molecular scales, where chemical reactions occur, to the device scales, where the turbulent flow is affected by ... -
Performance Portable Graphics Processing Unit Acceleration of a High-Order Finite Element Multiphysics Application
(The American Society of Mechanical Engineers (ASME), 2024)The Lawrence Livermore National Laboratory (LLNL) will soon have in place the El Capitan exascale supercomputer, based on advanced micro devices (AMD) graphics processing units (GPUs). As part of a multiyear effort under ... -
Toward Polydisperse Flows With mfix-exa
(The American Society of Mechanical Engineers (ASME), 2024)In the presence of large size disparities, single-grid neighbor search algorithms lead to inflated neighbor lists that significantly degrade the performance of Lagrangian particle solvers. If Eulerian–Lagrangian (EL) ... -
Localized Blowing for Near-Wake Flow and Vortical Structure Control in Turbulent Boundary Layers Over Periodic Two-Dimensional Roughness
(The American Society of Mechanical Engineers (ASME), 2023)Volumetric three-component flow measurements were made to investigate localized blowing (injection) as a control strategy for turbulent boundary layers over k-type two-dimensional (2D) roughness. The flow measurements were ... -
A Method to Determine Bubble Distribution in Liquid Using Data of Inverse Acoustical Scattering
(The American Society of Mechanical Engineers (ASME), 2023)Information on bubble distributions in liquids is required for various applications. Employment of inverse acoustic scattering is the usual path to determine these distributions. This path is based on solving a Fredholm ... -
Improving Three-Dimensional Synthetic Jet Modeling in a Crossflow
(The American Society of Mechanical Engineers (ASME), 2024)Three different circular synthetic jet modeling inlet conditions are studied for a turbulent crossflow. The study examines the differences when modeling the whole synthetic jet actuators (SJA), neck-only or jet-slot-only ... -
Physical Mechanisms Leading to Large Unsteady Pressure Fluctuations in a Gas Turbine Testing Facility
(The American Society of Mechanical Engineers (ASME), 2024)This paper is a detailed computational study of the flow within a scale model of a gas turbine engine testing facility. At mass flows representative of tests for large, high bypass ratio turbofans, large amplitude low-frequency ... -
Ground Effect Investigation on the Aerodynamic Airfoil Behavior Using Large Eddy Simulation
(The American Society of Mechanical Engineers (ASME), 2024)The underlying physics ever behind the aerodynamics of an airfoil in ground effect (GE) are still not fully resolved. In this work, the aerodynamics for an airfoil in GE is investigated computationally for both transitional ...