Results 41 to 50 of about 1,628,090 (248)
Issues in adaptive mesh refinement implementation
Electronic Journal of Differential Equations, 2007 Physical phenomena often involve discontinuities and/or localized high-gradient areas. The numerical simulation of these problems and conventional techniques (Finite Elements, Finite Volumes, Finite Differences, and Spectral Methods) with a uniform grid ...
Noureddine Hannoun, Vasilios Alexiades
doaj
Gas-kinetic scheme with space-time adaptive mesh refinement
Advances in AerodynamicsThe gas-kinetic scheme (GKS) is based on the mesoscopic gas-kinetic theory and can achieve a good balance between accuracy and robustness in a wide range of flows. In this study, a new GKS with space-time adaptive mesh refinement (STAMR-GKS) is developed
Gaocheng Liu, Zheng Xing, Qibing Li
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LubricantsThis study proposes an adaptive refinement method based on feature recognition to rapidly obtain solutions of the Reynolds equation. Leveraging an isogeometric analysis (IGA) solution framework supporting local refinement, three natural refinement ...
Gang Rao +4 more
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Advanced Engineering Materials, EarlyView.This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil +2 more
wiley +1 more source
Energy-group Wise Self-adaptive Refinement of Unstructured Mesh for Neutron Transport Simulation
Yuanzineng kexue jishuIn order to balance the accuracy and efficiency of neutron transport simulation, performing self-adaptive mesh refinement and domain decomposition parallelization for unstructured meshes are technologies that worth exploring.
GUO Haibing, RUAN Zhenglin, MA Jimin
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DG Methods for Aerodynamic Flows: Higher order, error estimation and adaptive mesh refinement [PDF]
, 2011 Discontinuous Galerkin (DG) methods allow higher-order flow solutions on unstructured or locally refined meshes by increasing the polynomial degree and using curved instead of straight-sided elements. Aerodynamic force coefficients like the drag, lift
Hartmann, Ralf
core
Convergence of simple adaptive Galerkin schemes based on h − h/2 error estimators [PDF]
, 2008 We discuss several adaptive mesh-refinement strategies based on (h − h/2)-error estimation. This class of adaptivemethods is particularly popular in practise since it is problem independent and requires virtually no implementational overhead.
Ortner, C. +7 more
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New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design
Advanced Engineering Materials, EarlyView.This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare +5 more
wiley +1 more source
The Athena++ Adaptive Mesh Refinement Framework: Multigrid Solvers for Self-gravity
The Astrophysical Journal Supplement Series, 2023 We describe the implementation of multigrid solvers in the Athena++ adaptive mesh refinement (AMR) framework and their application to the solution of the Poisson equation for self-gravity.
Kengo Tomida, James M. Stone
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Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions
, 2014 In numerical simulations of multi-scale, multi-phase flows, grid refinement is required to resolve regions with small scales. A notable example is liquid-jet atomization and subsequent droplet dynamics.
Chen XD(陈晓东), Yang V, Yang, V
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