Automatic Grid Generation with HEXAR

Numerical Grid Generation in Computational Field Simulations, Ed. M. Cross., B. K. Soni, J. F. Thompson, J. Hauser, P. R. Eiseman, Proceedings of the 6th International Conference, held at the University of Greenwich, pp.843-852, July 1998

MESHING
RESEARCH
CORNER

Wierse, Monika
SGI/Cray-Research,
Allmandring 30, 70550 Stuttgart, Germany,
mwierse@cray.com

Jean Cabello
SGI/Cray-Research,
655 Lone Oak Drive, Eagan, MN 55121, USA,
cabello@cray.com

Yoshihiko Mochizuki
SPC TeleEngineering Corporation, 5201 Great America Parkway,
Santa Clara, CA 95054,USA,
ymochi@spctc.com

Abstract
The main motivation for the development of the hexahedral grid generator HEXAR at SGI/Cray Research is to create a tool requiring minimum input and interaction from the user. We shall present in this paper the main ideas behind the HEXAR grid generator system: automatic creation of a structured base grid, projection step, feature edge and feature vertex capturing and improvement of the grid quality by surface and mesh smoothing. We shall discuss the user's interaction with the HEXAR system. Furthermore, we shall present applications of the HEXAR system to generate meshes for a four stroke engine and a diesel engine. Some recently added features, such as multiple materials capability, will also be described and illustrated by an example.