Results 1 to 10 of about 13,287 (303)

Dark matter from axion strings with adaptive mesh refinement [PDF]

Nature Communications, 2022
The question of what axion mass would give rise to the observed dark matter abundance requires proper modelling of non-linear dynamics of the axion field in the early Universe.
Malte Buschmann, Joshua W. Foster, Anson Hook, Adam Peterson, Don E. Willcox, Weiqun Zhang, Benjamin R. Safdi   +6 more
doaj   +2 more sources

Adaptive 3D unstructured mesh refinement [PDF]

E3S Web of Conferences, 2020
Algorithms for generating three-dimensional detailed computational meshes are considered. The algorithms are based on adaptive refinement of the original coarse meshes describing a 3D object.
Gruzintsev I, Kornilina M, Yakobovskiy M
doaj   +2 more sources

Adaptive mesh refinement for storm surge [PDF]

Ocean Modelling, 2014
An approach to utilizing adaptive mesh refinement algorithms for storm surge modeling is proposed. Currently numerical models exist that can resolve the details of coastal regions but are often too costly to be run in an ensemble forecasting framework without significant computing resources.
Kyle T Mandli, Clint Dawson
exaly   +4 more sources

Swarm Reinforcement Learning for Adaptive Mesh Refinement

Advances in Neural Information Processing Systems 36, 2023
Adaptive Mesh Refinement (AMR) enhances the Finite Element Method, an important technique for simulating complex problems in engineering, by dynamically refining mesh regions, enabling a favorable trade-off between computational speed and simulation accuracy.
Niklas Freymuth, Philipp Dahlinger, Tobias Würth, Simon Reisch, Luise Kärger, Gerhard Neumann   +5 more
core   +7 more sources

Adaptive mesh refinement (AMR) criteria comparison for the DrivAer model [PDF]

Heliyon
Aerodynamics is one of the main areas of development in vehicle design. One of the most efficient ways of testing the aerodynamic design of a vehicle is to use Computational Fluid Dynamics (CFD), which allows for faster and more accurate aerodynamic ...
Oscar Irigaray, Zugatz Ansa, Unai Fernandez-Gamiz, Ander Larrinaga, Roberto García-Fernandez, Koldo Portal-Porras   +5 more
doaj   +2 more sources

Comparison of refinement criteria for structured adaptive mesh refinement

Journal of Computational and Applied Mathematics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shengtai Li
exaly   +2 more sources

Adaptive Mesh Refinement for Electromagnetic Simulation

, 2023
We consider problems related to initial meshing and adaptive mesh refinement for the electromagnetic simulation of various structures. The quality of the initial mesh and the performance of the adaptive refinement are of great importance for the finite element solution of the Maxwell equations, since they directly affect the accuracy and the ...
Alexey Belokrys-Fedotov, Vladimir A. Garanzha, Lennard Kamenski, Alexandr Chikitkin, Evgeniy Pesnya, Nikita Aseev, Andrey Vorobyev   +6 more
openaire   +3 more sources

Adaptive Mesh Refinement for Arbitrary Initial Triangulations

Foundations of Computational Mathematics
Abstract We introduce a simple initialization of the Maubach bisection routine for adaptive mesh refinement which applies to any conforming initial triangulation and terminates in linear time with respect to the number of initial vertices.
Diening, Lars, Gehring, Lukas, Storn, Johannes   +2 more
openaire   +3 more sources

Stable Dynamical Adaptive Mesh Refinement [PDF]

Journal of Scientific Computing, 2021
AbstractWe consider accurate and stable interpolation procedures for numerical simulations utilizing time dependent adaptive meshes. The interpolation of numerical solution values between meshes is considered as a transmission problem with respect to the underlying semi-discretized equations, and a theoretical framework using inner product preserving ...
Tomas Lundquist, Jan Nordström, Arnaud G. Malan   +2 more
openaire   +2 more sources

Adaptive Mesh Refinement in Titanium [PDF]

19th IEEE International Parallel and Distributed Processing Symposium, 2005
In this paper, we evaluate Titanium's usability as a high-level parallel programming language through a case study, where we implement a subset of Chombo's functionality in Titanium. Chombo is a software package applying the adaptive mesh refinement methodology to numerical partial differential equations at the production level.
Colella, Phillip, Wen, Tong
openaire   +2 more sources