Results 1 to 10 of about 17,252 (172)
Quadrilateral mesh optimisation method based on swarm intelligence optimisation [PDF]
Scientific ReportsAs oil and gas exploration advances, the growing complexity of geological conditions demands higher-quality quadrilateral meshes for spectral element method-based seismic simulations.
Fen Zhang +6 more
doaj +2 more sources
Hexahedral mesh generation via constrained quadrilateralization. [PDF]
PLoS ONE, 2017 Decomposing a volume into high-quality hexahedral cells is a challenging task in finite element simulations and computer graphics. Inspired by the use of a spatial twist continuum and frame field in previous hexahedral mesh generation methods, we present
Feifei Shang, Yangke Gan, Yufei Guo
doaj +4 more sources
A posteriori error approximation in discontinuous Galerkin method on polygonal meshes in elliptic problems [PDF]
Scientific Reports, 2023 The paper presents a posteriori error approximation concept based on residuals in the two-dimensional discontinuous Galerkin (DG) method. The approach is relatively simple and effective in application, and it takes advantage of some unique properties of ...
Jan Jaśkowiec, Jerzy Pamin
doaj +2 more sources
MPAS-Seaice (v1.0.0): sea-ice dynamics on unstructured Voronoi meshes [PDF]
Geoscientific Model Development, 2022 We present MPAS-Seaice, a sea-ice model which uses the Model for Prediction Across Scales (MPAS) framework and spherical centroidal Voronoi tessellation (SCVT) unstructured meshes.
A. K. Turner +7 more
doaj +1 more source
Mathematics, 2022 This work addresses the suitability of using structured meshes composed of quadrilateral finite elements, instead of the classical unstructured meshes made of triangular elements.
Mohamad Hosein Rasekhmanesh +3 more
doaj +1 more source
CELL-CENTERED LAGRANGIAN LAX-WENDROFF HLL HYBRID SCHEME ON UNSTRUCTURED MESHES
Acta Polytechnica, 2021 We have recently introduced a new cell-centered Lax-Wendroff HLL hybrid scheme for Lagrangian hydrodynamics [Fridrich et al. J. Comp. Phys. 326 (2016) 878-892] with results presented only on logical rectangular quadrilateral meshes.
David Fridrich +4 more
doaj +1 more source
QUADRILATERAL MESHING BY CIRCLE PACKING [PDF]
International Journal of Computational Geometry & Applications, 2000 We use circle-packing methods to generate quadrilateral meshes for polygonal domains, with guaranteed bounds both on the quality and the number of elements. We show that these methods can generate meshes of several types: (1) the elements form the cells of a Voronoï diagram, (2) all elements have two opposite 90° angles, (3) all elements are kites, or
Bern, Marshall, Eppstein, David
openaire +3 more sources
FESOM-C v.2: coastal dynamics on hybrid unstructured meshes [PDF]
Geoscientific Model Development, 2019 We describe FESOM-C, the coastal branch of the Finite-volumE Sea ice – Ocean Model (FESOM2), which shares with FESOM2 many numerical aspects, in particular its finite-volume cell-vertex discretization.
A. Androsov +10 more
doaj +1 more source
Polynomial-Based Non-Uniform Ternary Interpolation Surface Subdivision on Quadrilateral Mesh
Mathematics, 2023 For non-uniform control polygons, a parameterized four-point interpolation curve ternary subdivision scheme is proposed, and its convergence and continuity are demonstrated.
Kaijun Peng, Jieqing Tan, Li Zhang
doaj +1 more source
Mesh generation in finite flement frame fields on 2D planes
Nihon Kikai Gakkai ronbunshu, 2020 In numerical analyses based on unstructured meshes represented by the finite element method, quadrilateral and hexa-hedral meshes are used for a two-dimensional and a three-dimensional analyses, respectively, from the viewpoint of calculation accuracy ...
Naoki MORITA, Masanobu HORIE, Kai SUTO
doaj +1 more source