Results 71 to 80 of about 6,260 (222)

Explicit‐Implicit Material Point Method for Dense Granular Flows With a Novel Regularized µ(I) Model

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 7, Page 3256-3273, May 2026.
ABSTRACT The material point method (MPM) is widely employed to simulate granular flows. Although explicit time integration is favored in most current MPM implementations for its simplicity, it cannot rigorously incorporate the incompressible µ(I)‐rheology, an efficient model ubiquitously adopted in other particle‐based numerical methods. While operator‐
Hang Feng, Zhen‐Yu Yin
wiley   +1 more source

An Adaptive Multigrid Method For EIT

, 2007
This paper presents an adaptive multigrid method used in both the forward and inverse problems. The proposed method combines adaptive mesh and multigrid solution strategy to resolve the forward problem.
Huaxiang Wang, Zhao, Bo, Yan, Yong, Wang, Huaxiang, Hu, Li, Xu, L., Y. Yan, Bo Zhao, Li Hu, L. Xu   +9 more
core   +1 more source

Numerical and Intelligent Modeling of MHD Casson Nanofluid Heat Transfer in Fractal Porous Cavities for Energy Systems

Engineering Reports, Volume 8, Issue 4, April 2026.
This study demonstrates that Al2O3–GNP hybrid nanofluids significantly enhance heat transfer in porous rectangular enclosures. Magnetic fields suppress velocity but raise temperature, while higher Biot and Brinkman numbers improve Nusselt number and entropy generation, highlighting effective thermal control in non‐Newtonian HNF systems.
Wajid Ullah, Muhammad Salim Khan, Zahir Shah, Aseel Smerat, Meshal Shutaywi   +4 more
wiley   +1 more source

A Multidimensional Upwind Solution Adaptive Multigrid Solver for Inviscid Cascades

, 1994
A recently developed multidimensional upwind multigrid method is combined with an adaptive grid refinement strategy in order to provide a numerical technique for computing two-dimensional compressible inviscid steady flows accurately and efficiently.
L. A. Catalano, M. Napolitano, P. De Palma, G. Pascazio   +3 more
core   +1 more source

Multigrid method for electronic structure calculations [PDF]

, 2001
A general real-space multigrid algorithm for the self-consistent solution of the Kohn-Sham equations appearing in the state-of-the-art electronic-structure calculations is described.
Puska, M.J., Nieminen, R.M., Heiskanen, M.   +2 more
core   +2 more sources

EVSS‐Based Simulation Techniques for the Viscoelastic Fluids With Pure Polymer Melts Using Three‐Field Approach

International Journal for Numerical Methods in Fluids, Volume 98, Issue 4, Page 492-509, April 2026.
This paper presents a finite element method for simulating highly viscoelastic flows of pure polymer melts using the Elastic Viscous Stress Splitting formulation. The method avoids higher‐order derivatives in the weak formulation by reformulating the convective term in the constitutive equation.
R. Ahmad, P. Zajac, S. Turek
wiley   +1 more source

Automated Cryo‐EM and Supervised Machine Learning Enable Reproducible Characterization of Extracellular Vesicles and Co‐Isolating Particles

Journal of Extracellular Vesicles, Volume 15, Issue 4, April 2026.
Automated cryo‐electron microscopy enables high‐throughput and unbiased image acquisition, which, combined with supervised machine learning allows modelling and detection of lipid membranes and other structures, like lipoproteins. This integration provides a powerful approach for analysis of EV size and morphology, as well as sample purity assessment ...
Agustin Enciso‐Martinez, Frank G. A. Faas, Anja W. M. de Jong, Ton G. van Leeuwen, Rienk Nieuwland, Edwin van der Pol, Peter ten Dijke, Roman I. Koning   +7 more
wiley   +1 more source

Multigrid for an HDG Method

, 2013
We analyze the convergence of a multigrid algorithm for the Hybridizable Discontinuous Galerkin (HDG) method for diffusion problems. We prove that a non-nested multigrid V-cycle, with a single smoothing step per level, converges at a mesh independent ...
Cockburn, Bernardo, Gopalakrishnan, Jay, Bubois, O.   +2 more
core   +1 more source

Multigrid methods for isogeometric discretization

Computer Methods in Applied Mechanics and Engineering, 2013
We present (geometric) multigrid methods for isogeometric discretization of scalar second order elliptic problems. The smoothing property of the relaxation method, and the approximation property of the intergrid transfer operators are analyzed. These properties, when used in the framework of classical multigrid theory, imply uniform convergence of two ...
Gahalaut, K.P.S., Kraus, Johannes, Tomar, S.K.   +2 more
openaire   +4 more sources

Fatigue Life Analysis of Cylindrical Roller Bearings Considering Elastohydrodynamic Lubrications

Applied Sciences
Cylindrical roller bearings are widely used in industrial machinery, automotive systems, and aerospace applications, where their reliability directly affects the performance and safety of mechanical systems.
Ke Zhang, Zhitao Huang, Qingsong Li, Ruiyu Zhang   +3 more
doaj   +1 more source