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Space-Time Meshing for Two-Dimensional Moving Boundary Problems

Zwart, P. J. and G. D. Raithby

Proceedings, 7th International Meshing Roundtable, Sandia National Lab, pp.187-200, October 1998

INTERNATIONAL
MESHING
ROUNTABLE

7th International Meshing Roundtable
October 26-28, 1998
Dearborn, Michigan, USA

Dept. of Mechanical Engineering, University of Waterloo
Waterloo, Ontario, Canada. N2L 3G1
Email: pjzwart@sunwise.uwaterloo.ca, graith@sunwise.uwaterloo.ca

Abstract
A new meshing strategy for two-dimensional space-time moving boundary methods is presented. The method breaks the space-time domain into time slabs, and tesselates each sequentially. Within each time slab, the mesh is generated by extruding the lower time plane, moving the boundary, adding and removing vertices near the boundary, and smoothing. Unlike other strategies, topological changes to the mesh are restricted to a thin layer near the boundary, thereby avoiding the need for global remeshing of the domain.

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