Results 31 to 40 of about 1,193 (178)
International Journal for Numerical Methods in Engineering, Volume 127, Issue 6, 30 March 2026.ABSTRACT The contribution deals with algebraic multigrid (AMG) based preconditioning methods for the iterative solution of a coupled linear system of equations arising in numerical simulations of failure of quasi‐brittle materials using generalized continuum approaches.
Nasser Alkmim +4 more
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Use of the multigrid methods for heat radiation problem
Journal of Applied Mathematics, 2003 We consider the integral equation arising as a result of heat radiation exchange in both convex and nonconvex enclosures of diffuse grey surfaces. For nonconvex geometries, the visibility function must be taken into consideration.
Naji A. Qatanani
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Accelerating Conjugate Gradient Solvers for Homogenization Problems With Unitary Neural Operators
International Journal for Numerical Methods in Engineering, Volume 127, Issue 5, 15 March 2026.ABSTRACT Rapid and reliable solvers for parametric partial differential equations (PDEs) are needed in many scientific and engineering disciplines. For example, there is a growing demand for composites and architected materials with heterogeneous microstructures.
Julius Herb, Felix Fritzen
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Parallel-in-time optimization of induction motors
Journal of Mathematics in Industry, 2023 Parallel-in-time (PinT) methods were developed to accelerate time-domain solution of evolutionary problems using modern parallel computer architectures.
Jens Hahne +5 more
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Indeed, No Need for HMPA! A DFT Study Comparing the Lewis Basicity of Phosphoric Acid Triamides
ChemistryEurope, Volume 4, Issue 3, March 2026.High‐level density functional theory calculations of the interactions of protons, lithium cations, and samarium(II) and samarium(III) species with a series of Lewis bases reveal that TPPA and HAPO‐2 are stronger donor compounds than HMPA. Therefore, they should by excellent substitutes of carcinogenic and mutagenic HMPA in many reactions.
Luca Steiner +3 more
wiley +1 more source
BENCHMARK SOLUTIONS FOR STOKES EQUATIONS WITH VARIABLE VISCOSITY IN CYLINDRICAL AND SPHERICAL COORDINATES [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2016 Stokes flows in cylindrical and spherical geometry are considered. Such flows are rather natural for geophysics. We derive some exact particular solutions of Stokes and continuity equations for particular dependence of viscosity and density on ...
I. V. Makeev, I. Y. Popov, I. V. Blinova
doaj
Comparison of Algebraic Multigrid Preconditioners for Solving Helmholtz Equations
Journal of Applied Mathematics, 2012 An algebraic multigrid (AMG) with aggregation technique to coarsen is applied to construct a better preconditioner for solving Helmholtz equations in this paper.
Dandan Chen, Ting-Zhu Huang, Liang Li
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Remote Sensing, 2016 The algebraic multigrid (AMG) method is used to solve linear systems of equations on a series of progressively coarser grids and has recently attracted significant attention for image segmentation due to its high efficiency and robustness. In this paper,
Haiwei Song, Yi Wang
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Case Studies in Thermal Engineering, 2023 The purpose of this study is to simulate thermal flows via quasi-Newtonian modeling by employing Finite Element Methods (FEM), as well as Newton Multigrid Solvers (NMS).
Rashid Mahmood +7 more
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Uniform Gas Flow Distribution into Several Partial Flows under Consideration of Closable Outlets
Chemie Ingenieur Technik, Volume 98, Issue 3, Page 70-77, March 2026.The uniform distribution of a gas flow into several partial flows poses a challenge in various technical fields. This study presents a static flow distributor design that ensures an equal distribution of an inlet gas flow regardless of the flow rate and the number of open outlets.
Nikolas Schmidt +3 more
wiley +1 more source