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A Quality Tetrahedral Mesh Generator and a 3D Delaunay Triangulator

Hang Si
Research Group: Numerical Mathematics and Scientific Computing
Weierstrass Institute for Applied Analysis and Stochastics (WIAS)
Mohrenstr. 39, 10117 Berlin, Germany

Introduction | Download | Documentation | Reference | Acknowledgment | FAQ |


TetGen is a program to generate tetrahedral meshes of any 3D polyhedral domains. TetGen generates exact constrained Delaunay tetrahedralizations, boundary conforming Delaunay meshes, and Voronoi partitions. The following pictures respectively illustrate a 3D polyhedral domain (left), a boundary conforming Delaunay tetrahedral mesh (middle), and its dual - a Voronoi partition (right).

TetGen provides various features to generate good quality and adaptive tetrahedral meshes suitable for numerical methods, such as finite element or finite volume methods. For more information of TetGen, please take a look at a list of features.

TetGen is written in C++. It can be compiled into either a standalone program invoked from command-line or a library for linking with other programs. All major operating systems, e.g. Unix/Linux, MacOS, Windows, etc, are supported.


TetGen (version 1.5.0, released on November 4, 2013) is available as a .zip file (267k) or as a .tar.gz file (266k). The downloaded package includes the C++ source code of TetGen, a README file, a LINCESE file, a makefile for compling, and an example file for testing.

Download TetGen version 1.5

TetGen version 1.4.3 (released on September 6, 2009, updated on January 19, 2011) is still available at here.





The development of TetGen is supported by Weierstrass Institute for Applied Analysis and Stochastics in the research group of Numerical Mathematics and Scientific Computing. The Pdelib project develops a collection of software components for solving non-linear partial differential equations including 2D and 3D mesh generators, (parallel) sparse matrix solvers, and scientific visualization tools, etc.