Results 51 to 60 of about 195,120 (280)

Digital Twin of Solid Oxide Electrochemical Cells: From 3D Microstructure Reconstruction to Multiphysics Modeling

open access: yesAdvanced Energy Materials, EarlyView.
This review outlines the implementation of digital twin frameworks for solid oxide electrochemical cells (SOCs), encompassing 3D microstructure reconstruction, quantitative morphological analysis, and microstructure‐resolved multiphysics modeling. Emphasis is placed on recent advances that position digital twins as powerful tools for microstructure ...
Seungsoo Jang   +9 more
wiley   +1 more source

Multiscale Coupling Between Macroscopic Mechanics and Atomic Assembly (MM–AA) of Soft‐Lattice Halide Perovskites

open access: yesAggregate, EarlyView.
This review clarifies the multiscale coupling mechanisms between macroscopic mechanics (e.g., surface tension, fluid shear, interfacial stress) and atomic assembly, highlighting the importance of mechanical regulation in suppressing solute aggregation and guiding crystal orientation.
Xiangzhe Li   +5 more
wiley   +1 more source

On the approximation of turbulent fluid flows by the Navier-Stokes-$\alpha$ equations on bounded domains [PDF]

open access: yes, 2014
The Navier-Stokes-$\alpha$ equations belong to the family of LES (Large Eddy Simulation) models whose fundamental idea is to capture the influence of the small scales on the large ones without computing all the whole range present in the flow.
Gutiérrez-Santacreu, Juan Vicente   +1 more
core  

Precise Real‐Time Measurement of Liquid Viscosity Using Digital Video Data

open access: yesAdvanced Intelligent Systems, EarlyView.
Frame‐by‐frame image similarity analysis is employed to obtain the viscosity of moving liquids in real time. The method allows for online implementation even in harsh environments, replacing complex and invasive experiments. Quantitative knowledge of liquid viscosity is of fundamental importance in many areas of materials synthesis and processing ...
Zhiwen Pan   +7 more
wiley   +1 more source

Rheology of compressible and density-variable Newtonian flows: non-Stokes hypothesis and ‘volume diffusion’

open access: yesJournal of Physics Communications
Stokes’ hypothesis allows for the frequent neglect of the bulk viscosity term related to fluid dilation effects on the viscous stress tensor in Newtonian flows.
S Kokou Dadzie
doaj   +1 more source

The Regularity Criteria and the A Priori Estimate on the 3D Incompressible Navier-Stokes Equations in Orthogonal Curvilinear Coordinate Systems

open access: yesJournal of Function Spaces, 2020
The paper considers the regularity problem on three-dimensional incompressible Navier-Stokes equations in general orthogonal curvilinear coordinate systems.
Fan Geng, Shu Wang, Yongxin Wang
doaj   +1 more source

Finite Element Modelling of the Hydrodynamic Environment of a Small ROV [PDF]

open access: yesModeling, Identification and Control, 1993
This paper addresses a practical problem, namely, modeling the hydrodynamic environment of a small ROV. This has become the problem of solving time-dependent incompressible Navier-Stokes equations with moving boundaries and a new method is developed to ...
Ren Guang, Jens G. Balchen
doaj   +1 more source

3D Locomotion of Surface‐Rolling Microrobots: A Trade‐off between Hydrodynamic Wall and Gravitational Effects

open access: yesAdvanced Intelligent Systems, EarlyView.
This study investigates 3D locomotion of surface‐rolling microrobots, revealing a trade‐off between hydrodynamic wall effects and gravity. Through experiments and simulations, it explores how robot size, inclination angle, actuation frequency, and surface microtopography affect the 3D locomotion.
Myungjin Park   +5 more
wiley   +1 more source

Variational Principle for Velocity-Pressure Formulation of Navier-Stokes Equations [PDF]

open access: yes, 2017
The work described here shows that the known variational principle for the Navier-Stokes equations and the adjoint system can be modified to produce a set of Euler-Lagrange variational equations which have the same order and same solution as the Navier ...
Sajjadi, Shahrdad G.
core   +2 more sources

Shape Morphing Programmable Systems for Enhanced Control in Low‐Velocity Flow Applications

open access: yesAdvanced Intelligent Systems, EarlyView.
A soft, Lorentz‐force‐driven programmable surface enables rapid, reversible shape morphing for active flow control. Integrating experimental, numerical, and modeling approaches, the system demonstrates effective modulation of near‐wall flow and momentum at low velocities, offering pathways for bio‐inspired aerodynamics and natural locomotion emulation.
Jin‐Tae Kim   +16 more
wiley   +1 more source

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