Results 91 to 100 of about 11,516 (229)
Nonlinear multigrid inversion [PDF]
Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429), 2004 In this paper, we propose a general framework for nonlinear multigrid inversion applicable to any inverse problem in which the forward model can be naturally represented at differing resolutions. In multigrid inversion, the problem is adjusted to be solved at each resolution by using the solutions at both finer and coarser resolutions.
Seungseok Oh +3 more
openaire +1 more source
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 +4 more
wiley +1 more source
The numerical treatment of curved boundary surfaces in an unfitted grid formulation for computational fluid dynamics [PDF]
, 1999 In this thesis a new Cartesian cut-cell scheme has been presented which solves the in- compressible Navier-Stokes equations using a finite volume approach and a staggered grid.
Gao, Zaixiang
core
A numerical solution of parabolic quasi-variational inequality nonlinear using Newton-multigrid method [PDF]
Iranian Journal of Numerical Analysis and OptimizationIn this article, we apply three numerical methods to study the L∞-convergence of the Newton-multigrid method for parabolic quasi-variational inequalities with a nonlinear right-hand side.
M. Bahi, M. Beggas, N. Nesba, A. Imtiaz
doaj +1 more source
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
Multigrid optimization in applications [PDF]
, 2000 Iterative techniques are a key methodology for the numerical solution of optimization problems in differential equations. In two practical application problems with different characteristics, this paper shows, how multigrid methods can be applied ...
Dreyer, Thomas +5 more
core +1 more source
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 +7 more
wiley +1 more source
MathematicsIn the article, we propose a combination method based on the multigrid method and constraint data to solve the inverse problem in the context of the nonlinear convection–diffusion equation in the multiphase porous media flow. The inverse problem consists
Shuai Wang +6 more
doaj +1 more source
A NetCDF version of the two-dimensional energy balance model based on the full multigrid algorithm
SoftwareX, 2017 A NetCDF version of the two-dimensional energy balance model based on the full multigrid method in Fortran is introduced for both pedagogical and research purposes. Based on the land–sea–ice distribution, orbital elements, greenhouse gases concentration,
Kelin Zhuang +2 more
doaj +1 more source