Results 71 to 80 of about 1,683 (266)

Comparative study of different vortex generator designs in corrugated channel for turbulent heat transfer enhancement

Results in Physics
In this study, we numerically investigated the enhancement of heat transfer and pressure drop characteristics using vortex generators (VGs) inside a corrugated channel.
Aimen Tanougast, Rachid Bessaih, Krisztián Hriczó   +2 more
doaj   +1 more source

Generation and evolution of the terahertz vortex beam

Optics Express, 2013
Based on the complementary V-shaped antenna structure, ultrathin vortex phase plates are designed to achieve the terahertz (THz) optical vortices with different topological charges. Utilizing a THz holographic imaging system, the two dimensional complex field information of the generated THz vortex beam with the topological number l=1 is directly ...
Jingwen, He, Xinke, Wang, Dan, Hu, Jiasheng, Ye, Shengfei, Feng, Qiang, Kan, Yan, Zhang   +6 more
openaire   +2 more sources

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source

Design and Development of Vortex Generators on Cylindrical Tower

Modelling and Simulation in Engineering
This work presents a numerical study on flow configurations and pressure distribution of cylindrical towers attached with different shapes of vortex generators.
Amnart Boonloi, Anan Sudsanguan, Withada Jedsadaratanachai   +2 more
doaj   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

Advanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle, Cesar Alvarez‐Llamas, Vincent Motto‐Ros, Christophe Dujardin, Jérémie Margueritat, David Rodney   +5 more
wiley   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Improvement of Energy, Exergy Efficiency and PEC Index in a Heat Exchanger Equipped with Turbulators under the Effect of a Magnetic Field [PDF]

Journal of Heat and Mass Transfer Research
A double-tube heat exchanger equipped with vortex generators is simulated under the influence of a magnetic field. The internal tube of this heat exchanger is equipped with blade-type vortex generators with various geometrical shapes. A magnetic field is
Alireza Aghaei, Alireza Mirzaei, Abolfazl Fattahi   +2 more
doaj   +1 more source

Numerical discovery and experimental confirmation of vortex ring generation by microramp vortex generator

Applied Mathematical Modelling, 2012
Micro vortex generators are a new kind of passive flow control instruments for shock-boundary layer interaction problems. In contrary to the conventional vortex generator, they have heights approximately 20-40% (more or less) of the boundary layer. Among them, Mircoramp vortex generators (MVG) are given special interest by engineers because of their ...
Yan, Yonghua, Li, Qin, Liu, Chaoqun, Pierce, Adam, Lu, Frank, Lu, Ping   +5 more
openaire   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source