scholarly journals Tetrahedral mesh improvement using moving mesh smoothing, lazy searching flips, and RBF surface reconstruction

2018 ◽  
Vol 103 ◽  
pp. 2-13 ◽  
Author(s):  
Franco Dassi ◽  
Lennard Kamenski ◽  
Patricio Farrell ◽  
Hang Si
Keyword(s):  
Surface Reconstruction ◽  
Moving Mesh ◽  
Tetrahedral Mesh ◽  
Mesh Smoothing ◽  
Mesh Improvement

scholarly journals Tetrahedral Mesh Improvement Using Moving Mesh Smoothing and Lazy Searching Flips

2016 ◽  
Vol 163 ◽  
pp. 302-314 ◽  
Author(s):  
Franco Dassi ◽  
Lennard Kamenski ◽  
Hang Si
Keyword(s):  
Moving Mesh ◽  
Tetrahedral Mesh ◽  
Mesh Smoothing ◽  
Mesh Improvement

The geometric element transformation method for tetrahedral mesh smoothing

2009 ◽  
Vol 199 (1-4) ◽  
pp. 169-182 ◽  
Author(s):  
Dimitris Vartziotis ◽  
Joachim Wipper ◽  
Bernd Schwald
Keyword(s):  
Transformation Method ◽  
Tetrahedral Mesh ◽  
Mesh Smoothing ◽  
Geometric Element

scholarly journals A Parallel Local Reconnection Approach for Tetrahedral Mesh Improvement

2016 ◽  
Vol 163 ◽  
pp. 289-301 ◽  
Author(s):  
Mengmeng Shang ◽  
Chaoyan Zhu ◽  
Jianjun Chen ◽  
Zhoufang Xiao ◽  
Yao Zheng
Keyword(s):  
Tetrahedral Mesh ◽  
Mesh Improvement

scholarly journals Designing Parallel Adaptive Laplacian Smoothing for Improving Tetrahedral Mesh Quality on the GPU

2021 ◽  
Vol 11 (12) ◽  
pp. 5543
Author(s):  
Ning Xi ◽  
Yinjie Sun ◽  
Lei Xiao ◽  
Gang Mei
Keyword(s):  
Parallel Algorithm ◽  
Adaptive Algorithm ◽  
Large Scale ◽  
Tetrahedral Mesh ◽  
Processing Unit ◽  
Mesh Quality ◽  
Mesh Smoothing ◽  
Tetrahedral Meshes ◽  
Numerical Computing ◽  
Laplacian Smoothing

Mesh quality is a critical issue in numerical computing because it directly impacts both computational efficiency and accuracy. Tetrahedral meshes are widely used in various engineering and science applications. However, in large-scale and complicated application scenarios, there are a large number of tetrahedrons, and in this case, the improvement of mesh quality is computationally expensive. Laplacian mesh smoothing is a simple mesh optimization method that improves mesh quality by changing the locations of nodes. In this paper, by exploiting the parallelism features of the modern graphics processing unit (GPU), we specifically designed a parallel adaptive Laplacian smoothing algorithm for improving the quality of large-scale tetrahedral meshes. In the proposed adaptive algorithm, we defined the aspect ratio as a metric to judge the mesh quality after each iteration to ensure that every smoothing improves the mesh quality. The adaptive algorithm avoids the shortcoming of the ordinary Laplacian algorithm to create potential invalid elements in the concave area. We conducted 5 groups of comparative experimental tests to evaluate the performance of the proposed parallel algorithm. The results demonstrated that the proposed adaptive algorithm is up to 23 times faster than the serial algorithms; and the accuracy of the tetrahedral mesh is satisfactorily improved after adaptive Laplacian mesh smoothing. Compared with the ordinary Laplacian algorithm, the proposed adaptive Laplacian algorithm is more applicable, and can effectively deal with those tetrahedrons with extremely poor quality. This indicates that the proposed parallel algorithm can be applied to improve the mesh quality in large-scale and complicated application scenarios.

scholarly journals Moving Adaptive Unstructured 3-D Meshes in Semiconductor Process Modeling Applications

VLSI Design ◽  
1998 ◽  
Vol 6 (1-4) ◽  
pp. 373-378 ◽  
Author(s):  
Andrew Kuprat ◽  
Denise George ◽  
Eldon Linnebur ◽  
Harold Trease ◽  
R. Kent Smith
Keyword(s):  
Adaptive Mesh Refinement ◽  
Moving Boundary ◽  
Dopant Concentration ◽  
Mesh Refinement ◽  
Adaptive Mesh ◽  
Time Dependent ◽  
Tetrahedral Mesh ◽  
Piecewise Linear Approximation ◽  
Mesh Smoothing ◽  
Semiconductor Process

The next generation of semiconductor process and device modeling codes will require 3-D mesh capabilities including moving volume and surface grids, adaptive mesh refinement and adaptive mesh smoothing. To illustrate the value of these techniques, a time dependent process simulation model was constructed using analytic functions to return time dependent dopant concentration and time dependent SiO2 volume and surface velocities. Adaptive mesh refinement and adaptive mesh smoothing techniques were used to resolve the moving boron dopant diffusion front in the Si substrate. The adaptive mesh smoothing technique involves minimizing the L2 norm of the gradient of the error between the true dopant concentration and the piecewise linear approximation over the tetrahedral mesh thus assuring that the mesh is optimal for representing evolving solution gradients. Also implemented is constrained boundary smoothing, wherein the moving SiO2/Si interface is represented by moving nodes that correctly track the interface motion, and which use their remaining degrees of freedom to minimize the aforementioned error norm. Thus, optimal tetrahedral shape and alignment is obtained even in the neighborhood of a moving boundary. If desired, a topological “reconnection” step maintains a Delaunay mesh at all times. The combination of adaptive refinement, adaptive smoothing, and mesh reconnection gives excellent front tracking, feature resolution, and grid quality for finite volume/finite element computation.

scholarly journals Tetrahedral Mesh Improvement Using Multi-face Retriangulation

2009 ◽  
pp. 539-555 ◽  
Author(s):  
Marek Krzysztof Misztal ◽  
Jakob Andreas Bærentzen ◽  
François Anton ◽  
Kenny Erleben
Keyword(s):  
Tetrahedral Mesh ◽  
Mesh Improvement
Sign in / Sign up

Export Citation Format

Share Document