Results 41 to 50 of about 179,449 (293)

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

Advanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling, Matthias Steinbacher, Nils Ellendt   +2 more
wiley   +1 more source

Revisiting the natural convection effects at ultra-low redox concentration solutions: The influence of viscosity and diameter of wire electrode

Electrochemistry Communications
Natural convection could arise even at ultra-low redox concentration solutions (1–10 mM). Models such as convection–diffusion layer model and spontaneous convection model have been established to describe this phenomenon.
Zichen Zhang, Jianbang Ge, Biwu Cai, Yang Gao, Zhihao Cheng, Shun Cao, Shuqiang Jiao   +6 more
doaj   +1 more source

Numerical Methods for Solving Convection-Diffusion Problems [PDF]

, 2012
Convection-diffusion equations provide the basis for describing heat and mass transfer phenomena as well as processes of continuum mechanics. To handle flows in porous media, the fundamental issue is to model correctly the convective transport of ...
Churbanov, A., Vabishchevich, P.
core  

New conditional symmetries and exact solutions of nonlinear reaction-diffusion-convection equations. II

, 2006
In the first part of this paper math-ph/0612078, a complete description of Q-conditional symmetries for two classes of reaction-diffusion-convection equations with power diffusivities is derived.
Ames W F, Arrigo D J, Bluman G W, Cherniha R, Cherniha R Pliukhin O, Cherniha R Serov M, Dixon J M, Fitzhugh R, Fushchych W I, Fushchych W I, Fushchych W I, Gandarias M L, Kamke E, Kolmogoroff A, Levi D, Murray J D, Murray J D, Nucci M C, Oleksii Pliukhin, Oliveira-Pinto F, Ovsiannikov L V, Polyanin A D, Pucci E, Roman Cherniha, Saccomandi G   +24 more
core   +3 more sources

Probing Non-Integer Dimensions [PDF]

, 2006
We show that two-dimensional convection-diffusion problems with a radial sink or source at the origin may be recast as a pure diffusion problem in a fictitious space in which the spatial dimension is continuously-tunable with the Peclet number.
ben-Avraham D, Itzykson C, Ovchinnikov A A, P L Krapivsky, Privman V, Redner S, Redner S, Redner S, S Redner   +8 more
core   +3 more sources

Engineered Mycelial Scaffolds With Tunable Ultraviolet Protection, Wettability, Thermal Stability, and Spatial Mechanics

Advanced Engineering Materials, EarlyView.
Fungal mycelia grown into biodegradable scaffolds and infused with titania nanoparticles show enhanced ultraviolet shielding, thermal protection, and surface nonwettability. Properties were tuned by drying methods, revealing structure–function relationships.
Juwon S. Afolayan, Xin Zhang, Carole C. Perry   +2 more
wiley   +1 more source

Fujita type theorem for a class of coupled quasilinear convection–diffusion equations

Boundary Value Problems, 2021
In this paper, we establish the Fujita type theorem for a homogeneous Neumann outer problem of the coupled quasilinear convection–diffusion equations and formulate the critical Fujita exponent. Besides, the influence of diffusion term, reaction term, and
Yanan Zhou, Yan Leng, Yuanyuan Nie
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Pore-scale evaluation of CO2 miscible displacement in porous rocks induced by convection and diffusion: implications for CO2 geo-sequestration

International Journal of Coal Science & Technology
CO2 enhanced oil recovery plays an important role in carbon storage and utilization. However, the incomplete understanding of the underlying microscopic convection–diffusion mechanisms in complex pore structures has constrained the broader industrial ...
Xiangjie Qin, Han Wang, Jinsui Wu, Gang Wang, David A. Wood, Jianchao Cai   +5 more
doaj   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source