# Charla: TetGen, a Delaunay-based Quality Tetrahedral Mesh Generator

**Abstract: **TetGen is a C++ program for generating good quality tetrahedral meshes suitable for numerical methods and scientific computing. It is built upon fast algorithms and advanced technologies developed in computational geometry and engineering.

In this talk, I will present an overview about the algorithms and techniques currently used by TetGen to realize a robust and efficient software for automatically quality isotropic tetrahedral mesh generation and mesh adaptation.

Various examples of TetGen as well as comparisons with other meshing softwares are presented.

Reference:

H. Si, TetGen, a Delaunay-based Tetrahedral Mesh Generator,

ACM Trans. Math. Softw., 41 (2):11:1â€“11:36, February 2015.

**Short bio:** Hang Si is employed by Weierstrass Institute (WIAS) in Berlin. His main research is tetrahedral mesh generation and the discrete and computational geometry problems behind it. The goal is to develop efficient algorithms for automatically generating tetrahedral meshes suitable for numerical methods such as finite element and finite volume methods. He developed the software, TetGen, a Delaunay tetrahedral mesh generator. It is freely available for academic use (http://www.tetgen.org).

Hang Si got his B.S. in Electrical Engineering in Hangzhou University (now merged in Zhejiang University) in 1994, and got his M.S. in Computer Science in Zhejiang University in 2002. He joined the research group "Numerical Mathematics and Scientific Computing" of WIAS in 2002. He received his Ph.D from the Institute of Mathematics of Technische Universitaet Berlin in 2008.