Abstract
A new systemized procedure for chimera-domain decomposition is presented. This procedure consists of a new cut-paste algorithm for optimal mesh interface and a two-step search method for donor cell identification. It is fully automated and requires minimal user input. The cut-paste algorithm is based on the advancing front technique in which the fronts are iteratively determined from the initial fronts, which are a collection of fringe points obtained from conventional Chimera hole cutting. The final fronts are determined iteratively in such a way that the overlapping region is minimized. With this method, interpolation points are located away from solid walls where flow gradient is high. We also can reduce the error that may arise from interpolation in stiff gradient regions. Two- and three-dimensional examples are chosen to demonstrate the effectiveness of this new procedure
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