Results 1 to 10 of about 18,505 (161)
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.By utilizing magnetic field‐assisted electrodeposition to synthesize a Cu‐rich dendritic NiFeCu electrocatalyst, this study significantly improves the efficiency of water splitting. The research not only introduces an innovative strategy for designing highly active bifunctional catalysts but also pioneers a new direction for the application of magnetic
Zhong Wang +8 more
wiley +1 more source
Results in Physics, 2017 In this paper, the equilibrium properties of some ideal and resistive magnetohydrodynamics (MHD) are investigated. The governing equations are taken in the steady state for parallel and non-parallel flow to magnetic filed.
S.M. Moawad +2 more
doaj +1 more source
[Nonlinear magnetohydrodynamics]. [Threshold unstable MHD activity] [PDF]
, 1992 Theoretical predictions were compared with available data from JET on the threshold unstable MHD activity in toroidal confinement devices. In particular, questions arising as to Hartmans number and the selection of a kinematic viscosity are discussed.
openaire +2 more sources
Magnetic Electrocatalysts Enabling a High‐Rate Capability in Lithium‐Oxygen Batteries
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This study introduces zinc ferrite (ZnFe2O4) nanoparticles with tunable magnetic properties as bifunctional electrocatalysts for lithium‐oxygen batteries. Under an applied magnetic field, these catalysts significantly enhance oxygen reduction and evolution reactions by promoting spin‐aligned charge transfer and ion diffusion. The approach achieves high
Yimin Chen +7 more
wiley +1 more source
Flattening of the Density Spectrum in Compressible Hall-MHD Simulations
Atmosphere, 2021 Observations of proton density fluctuations of the solar wind at 1 au have shown the presence of a decade-long transition region of the density spectrum above sub-ion scales, characterized by a flattening of the spectral slope.
Victor Montagud-Camps +7 more
doaj +1 more source
An Unsplit, Cell-Centered Godunov Method for Ideal MHD
, 2003 We present a second-order Godunov algorithm for multidimensional, ideal MHD. Our algorithm is based on the unsplit formulation of Colella (J. Comput. Phys. vol. 87, 1990), with all of the primary dependent variables centered at the same location.
Colella, P. +4 more
core +3 more sources
Long‐Time Solvability and Asymptotics for the 3D Rotating MHD Equations
Mathematische Nachrichten, EarlyView.ABSTRACT We consider the initial value problem for the 3D incompressible rotating MHD equations around a constant magnetic field. We prove the long‐time existence and uniqueness of solutions for small viscosity coefficient and high rotating speed. Moreover, we investigate the asymptotic behavior of solutions in the limit of vanishing viscosity and fast
Hiroki Ohyama
wiley +1 more source
The global strong solutions of the 3D incompressible Hall-MHD system with variable density
Mathematical Modelling and AnalysisIn this paper, we focus on the well-posedness problem of the three-dimensional incompressible viscous and resistive Hall-magnetohydrodynamics system (Hall-MHD) with variable density.
Shu An, Jing Chen, Bin Han
doaj +1 more source
Global regularity for the 2D MHD equations with partial hyperresistivity
, 2017 This paper establishes the global existence and regularity for a system of the two-dimensional (2D) magnetohydrodynamic (MHD) equations with only directional hyperresistivity.
Dong, Bo-Qing, Li, Jingna, Wu, Jiahong
core +1 more source
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT The numerical approximation of nonlinear chaotic differential systems, such as the modified stretch‐twist‐fold (STF) flow and multi‐bond chaotic attractors, presents a significant challenge due to their sensitive dependence on initial conditions and complex dynamics where analytical solutions are unattainable.
Shina Daniel Oloniiju, Anastacia Dlamini
wiley +1 more source