Journal of Fluids Engineering: Recent submissions
Now showing items 521-540 of 9024
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Evaluation of a Statistically Targeted Forcing Method for Synthetic Turbulence Generation in Scale-Resolving Simulations
(The American Society of Mechanical Engineers (ASME), 2022)Computational fluid dynamics (CFD) results are presented for synthetic turbulence generation by a proposed statistically targeted forcing (STF) method. The new method seeks to introduce a fluctuating velocity field with a ... -
Modeling of Cube Array Roughness: RANS, Large Eddy Simulation, and Direct Numerical Simulation
(The American Society of Mechanical Engineers (ASME), 2022)Flow over arrays of cubes is an extensively studied model problem for rough wall turbulent boundary layers. While considerable research has been performed in computationally investigating these topologies using direct ... -
Simulation of a Centrifugal Pump Based on a Lagrangian Particle Solver
(The American Society of Mechanical Engineers (ASME), 2022)A three-dimensional full-scale centrifugal pump is simulated using the moving particle semi-implicit (MPS) method. The generic smoothed wall (GSW) boundary is used and extended to three dimensions to address complicated ... -
Numerical Studies on Turbulent Flow Field in a 90 deg Pipe Bend
(The American Society of Mechanical Engineers (ASME), 2022)This paper deals with the modeling of turbulent flow through a 90 deg pipe bend using an unsteady Reynolds-averaged Navier–Stokes (U-RANS) approach where k–ε model is used for turbulence closure. While limitations in solving ... -
Estimation of Turbulent Length Scales at a Turbocharger Inlet Using Stereoscopic Particle Image Velocimetry
(The American Society of Mechanical Engineers (ASME), 2022)Stereoscopic particle image velocimetry (SPIV) measurements are carried out at the inlet of a turbocharger compressor at four different shaft speeds from 80,000 rpm to 140,000 rpm and over the entire range of flow rates ... -
Physics Informed Deep Neural Net Inverse Modeling for Estimating Model Parameters in Permeable Porous Media Flows
(The American Society of Mechanical Engineers (ASME), 2022)We present a method that combines a physics-informed deep neural network and Stokes' second problem to estimate the porosity and the permeability of a porous medium. Particularly, we investigate the accuracy of physics-informed ... -
New Property Averaging Scheme for Volume of Fluid Method for Two-Phase Flows With Large Viscosity Ratios
(The American Society of Mechanical Engineers (ASME), 2022)To predict liquid–gas two-phase flow, accurate tracking of the evolving liquid–gas interface is required. Volume-of-fluid (VoF) method has been used for computationally modeling such flows where a single set of governing ... -
Special Issue on Fluids Engineering Research in Honor of the Life and Achievements of Professor Kirti Ghia—A Pioneer in Computational Fluid Dynamics
(The American Society of Mechanical Engineers (ASME), 2022)Professor Kirti “Karman” Ghia was an aerospace engineering educator, a research scientist, and a pioneer in the field of Computational Fluid Dynamics (CFD). He passed away on June 13, 2017, at the age of 80. He completed ... -
How Turbulence Models Perform in Simulating Pipeflow Response to Targeted Wall-Shapes?
(The American Society of Mechanical Engineers (ASME), 2022)This study evaluates how Reynolds-averaged Navier–Stokes (RANS) models perform in simulating the characteristics of mean three-dimensional perturbed flows in pipes with targeted wall-shapes. The principal objective of this ... -
Analysis, Design, and Validation of a Vaned Diffuser for Improved Fish Friendliness
(The American Society of Mechanical Engineers (ASME), 2022)The primary cause of mechanical-related fish injury and mortality in turbomachinery is blade strike. Fish contained in the flow may strike with the rotor blades and the fixed diffuser vanes, the latter being a non-negligible ... -
The Development of a Partially Averaged Navier–Stokes KSKL Model
(The American Society of Mechanical Engineers (ASME), 2022)A new partially averaged Navier–Stokes (PANS) closure is derived based on the k−kL (KSKL) model. The aim of this new model is to incorporate the desirable features of the KSKL model, compared to the k−ω shear stress transport ... -
Experimental Study of Gas–Liquid Pressurization Performance and Critical Gas Volume Fractions of a Multiphase Pump
(The American Society of Mechanical Engineers (ASME), 2022)Gas entrainment may cause pressurization deterioration and even failure of pumps under conditions of high inlet gas volume fraction (GVF). When the inlet GVF increases to a critical value, an obvious deterioration performance ... -
Experimental Investigation of the Subchannel Axial Pressure Drop and Hydraulic Characteristics of a 61-Pin Wire Wrapped Rod Bundle
(The American Society of Mechanical Engineers (ASME), 2022)Wire-wrapped hexagonal fuel bundles have been extensively investigated due to their enhanced heat transfer and flow characteristics. Experimental measurements are important to study the thermal-hydraulic behavior of such ... -
Investigation on Swirl Instability in a Vane-Type Separator With Tomographic Particle Image Velocimetry
(The American Society of Mechanical Engineers (ASME), 2022)The separation efficiency of a vane-type separator is greatly affected by swirl instability. The separator consists of a swirling vane, a recovery vane and a main pipe. Driven by centrifugal force, the bubbly flow tends ... -
Single-Phase and Two-Phase Flow Pressure Drop in a Long Double Helicoidally Coiled Tube
(The American Society of Mechanical Engineers (ASME), 2022)Single-phase and two-phase frictional pressure drop in horizontally oriented double helically coiled tubes confined in a cylindrical shell are experimentally studied using an instrumented test loop that represents a ... -
The Wake Dynamics Behind a Near-Wall Square Cylinder
(The American Society of Mechanical Engineers (ASME), 2022)Particle image velocimetry is used to experimentally study the wake dynamics behind a near-wall square cylinder subjected to a thick oncoming turbulent boundary layer. The turbulent boundary layer thickness was 3.6 times ... -
Turbulent Flow Around Rectangular Cylinders With Different Streamwise Aspect Ratios
(The American Society of Mechanical Engineers (ASME), 2022)Turbulent flows around a square cylinder and a rectangular cylinder with a streamwise aspect ratio (length-to-height) of 5 in a uniform flow were investigated using time-resolved particle image velocimetry (TR-PIV). The ... -
Thermocapillary Fingering of a Gravity-Driven Self-Rewetting Fluid Film Flowing Down a Vertical Slippery Wall
(The American Society of Mechanical Engineers (ASME), 2022)The surface tension of a self-rewetting fluid (SRF) has a nonmonotonic variation with the increase of temperature, implying potential applications in many industrial fields. In this paper, flow patterns and stability ... -
The Stability of Plane Poiseuille Flow in a Finite-Length Channel
(The American Society of Mechanical Engineers (ASME), 2022)The linear stability of plane Poiseuille flow through a finite-length channel is studied. A weakly divergence-free basis finite element method with streamline upwind Petrov–Galerkin (SUPG) stabilization is used to formulate ... -
Stratified Shear-Thinning Fluid Flow Past Tandem Cylinders in the Presence of Mixed Convection Heat Transfer With a Channel-Confined Configuration
(The American Society of Mechanical Engineers (ASME), 2022)The article examines the consequence of thermal buoyancy-driven cross-flow and heat transfer for shear-thinning power-law fluids on the tandem orientation of two cylinders. Finite volume methodology is used to investigate ...