A method of unstructured tetrahedral-mesh generation for general three-dimensional domains is presented. A conventional boundary representation is adopted as the basis for the description of solids with evolving geometry and topology. The geometry of surfaces is represented either analytically of by piecewise polynomial interpolation. A preliminary surface mesh is generated by an advancing fron...

Abstract In metal forming physical field analysis, finite element method (FEM) is a crucial tool, in which the mesh-density has significant impact on results. High mesh density usually contributes authentic to an increase accuracy of simulation results but costs more computing resources. To eliminate this drawback, we propose data-driven boosting model named SuperMeshingNet that uses low as inp...

We present a new high-resolution N -body algorithm for cosmological simulations. The algorithm employs a traditional particle-mesh technique on a cubic grid and successive multilevel relaxations on the finer meshes, introduced recursively in a fully adaptive manner in the regions where the density exceeds a predefined threshold. The mesh is generated to effectively match an arbitrary geometry o...

Mesh generation is a critical step in high fidelity computational simulations. High quality and high density meshes are required to accurately capture the complex physical phenomena. A parallel framework has been developed to generate large-scale meshes in a short period of time. A coarse volume mesh is generated first to provide the basis of block interfaces and partitioned into a number of su...

We present a method for isotropic remeshing of arbitrary genus surfaces. The method is based on a mesh adaptation process, namely, a sequence of local modifications performed on a copy of the original mesh, while referring to the original mesh geometry. The algorithm has three stages. In the first stage the required number or vertices are generated by iterative simplification or refinement. The...

We present results from molecular-dynamics simulations of a generic bead-spring model of copolymer chains confined between solid walls and report on the glass-transition temperature and segmental dynamics as a function of film thickness and mesh size (the end-to-end distance of the subchains in the crosslinked polymer networks). Apparently, the glass-transition temperature displayed a steep inc...

Mesh discretization effects can have a significant impact on obtaining meaningful results in statistical TCAD simulations. Discretization errors, i.e. inaccuracy of the solution due to too large or poorly shaped mesh elements, can be damaging in an absolute sense, as an offset of nominal values. Potentially even more dangerous are relative errors between statistical runs due to meshing noise, w...