Automatic Mesh Generation and Adaptation by Using Contours

International Journal for Numerical Methods in Engineering, Wiley, Vol 31, pp.689-707, 1991

MESHING
RESEARCH
CORNER

Department of City and Structural Engineering. University of Hong Kong. Hong Kong Abstract
A general and efficient remeshing algorithm is presented for the discretization of arbitrary planar domains Into triangular elements in consistency with the given node spacing function.

The contour lines of the node spacing function at suitable calculated levels provide the natural lines of division of the problem domain into subregions. where finite element meshes of different element sizes are generated using the available general-purpose mesh generators.

Examples of remeshing for various node spacing functions are given to illustrate that high-quality gradation meshes can be generated automatically without any users intervention by this simple contour line method.