A parallel mesh generation algorithm based on the vertex label assignment scheme

1989 ◽  
Vol 28 (6) ◽  
pp. 1429-1448 ◽  
Author(s):  
Fuhua Cheng ◽  
Jerzy W. Jaromczyk ◽  
Junnin-Ren Lin ◽  
Shyue-Shian Chang ◽  
Jei-Yeou Lu
Keyword(s):  
Mesh Generation ◽  
Generation Algorithm ◽  
Parallel Mesh Generation ◽  
Vertex Label ◽  
Assignment Scheme

scholarly journals Study and Verification of Large-Scale Parallel Mesh Generation Algorithm for Centrifugal Pump

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Liang Dong ◽  
Yuhang Zhang ◽  
Zhipeng Ge ◽  
Cui. Dai ◽  
Jinnan Guo
Keyword(s):  
Centrifugal Pump ◽  
Mesh Generation ◽  
High Performance ◽  
Large Scale ◽  
Grid Point ◽  
Internal Flow ◽  
Generation Algorithm ◽  
Parallel Mesh Generation ◽  
Grid Algorithm ◽  
High Performance Computers

In order to reveal the details of the internal flow in a centrifugal pump, a large-scale mesh is needed. However, the mesh generated by the serial grid algorithm cannot meet the calculation requirements due to the huge amount of time. A large-scale parallel mesh generation algorithm of a centrifugal pump for high-performance computers is presented in this paper. First, a grid point set for the 3D Delaunay triangular mesh on the surface of the centrifugal pump is generated. Then, the S-H (Sutherland–Hodgman) algorithm for cropping and segmenting these grid point sets on the surface is employed. A uniform boundary mesh is generated and is divided into different subregions. In addition, in order to ensure the consistency of the interface mesh and to avoid the boundary mesh intersection overlap error, a parallel constrained Delaunay mesh generation algorithm based on region numbering is proposed, which can improve the quality and efficiency of the generated parallel mesh. Finally, the centrifugal pump is tested for verifying the parallel mesh algorithm in the Tianhe-2 supercomputer. PIV (particle image velocimetry) internal flow experiment is comparatively analyzed with the numerical simulation of large-scale mesh. The results show that the algorithm can generate 108 3D unstructured grid elements in 5 minutes, and the parallel efficiency can achieve 80%. The proposed algorithm not only ensures high grid quality with the serial grid algorithm but also accurately simulates the flow law in the centrifugal pump. The double-vortex structure which is obtained by PIV experiment is captured by the large-scale mesh.

On control of adaptation in parallel mesh generation

2004 ◽  
Vol 20 (3) ◽  
pp. 193-201 ◽  
Author(s):  
Konstantin Lipnikov ◽  
Yuri Vassilevski
Keyword(s):  
Mesh Generation ◽  
Parallel Mesh Generation

Finite Element Mesh Generator Applying Constraints’ Propagation and Isoparametric Mapping

1991 ◽  
Author(s):  
J. Rodriguez ◽  
M. Him
Keyword(s):  
Finite Element ◽  
Mesh Generation ◽  
Element Model ◽  
Finite Element Mesh ◽  
Fe Model ◽  
Element Analysis ◽  
Element Mesh ◽  
Mesh Generator ◽  
Generation Algorithm ◽  
Essential Input

Abstract This paper presents a finite element mesh generation algorithm (PREPAT) designed to automatically discretize two-dimensional domains. The mesh generation algorithm is a mapping scheme which creates a uniform isoparametric FE model based on a pre-partitioned domain of the component. The proposed algorithm provides a faster and more accurate tool in the pre-processing phase of a Finite Element Analysis (FEA). A primary goal of the developed mesh generator is to create a finite element model requiring only essential input from the analyst. As a result, the generator code utilizes only a sketch, based on geometric primitives, and information relating to loading/boundary conditions. These conditions represents the constraints that are propagated throughout the model and the available finite elements are uniformly mapped in the resulting sub-domains. Relative advantages and limitations of the mesh generator are discussed. Examples are presented to illustrate the accuracy, efficiency and applicability of PREPAT.

Implementation of a feature-constraint mesh generation algorithm within a GIS

2012 ◽  
Vol 49 ◽  
pp. 46-52 ◽  
Author(s):  
Thomas J. Heinzer ◽  
M. Diane Williams ◽  
Emin C. Dogrul ◽  
Tariq N. Kadir ◽  
Charles F. Brush ◽  
...  
Keyword(s):  
Mesh Generation ◽  
Generation Algorithm

Effect of Osteoporosis on Natural Frequencies in Mouse Femur: Vibration Test and Micro-CT Based Finite Element Analysis

2006 ◽  
Vol 326-328 ◽  
pp. 851-854 ◽  
Author(s):  
Yoon Hyuk Kim ◽  
Chang Hwan Byun ◽  
Taek Yul Oh
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mesh Generation ◽  
Natural Frequencies ◽  
Treated Group ◽  
Vibration Test ◽  
Micro Ct ◽  
Element Analysis ◽  
Generation Algorithm ◽  
The Finite Element Analysis

In this study, the change of the natural frequencies in mouse femurs with osteoporosis was investigated based on a vibration test and a finite element. Three groups of the femurs include the osteoporotic group, the treated group and the normal group. In the vibration test, the natural frequencies were measured by the mobility test. For the finite element analysis, the micro finite element model of the femur was reconstructed using the Micro-CT images and the Voxel mesh generation algorithm. From the results, the averaged natural frequencies in the osteoporotic group were the highest, followed by those in the treated group. The finite element models were validated within 15% errors by comparing the natural frequencies in the finite element analysis with those in the vibration test. The developed Micro-CT system, the Voxel mesh generation algorithm, the presented finite element analysis, and vibration test could be useful for the investigation of the structural change of the bone tissue, and the diagnosis and the treatment in the osteoporosis.

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