Title: A local and fast interpolation method for mesh deformation

Authors: Jing Tang; Mingsheng Ma; Bin Li; Pengcheng Cui

Addresses: School of Aeronautics, Northwestern Polytechnical University, Xi'an, 710072, China ' Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang, 621000, China ' Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang, 621000, China ' Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang, 621000, China

Abstract: In this study, a local interpolation approach is developed to deal with the deformation of a mesh containing structured and stretched viscous elements. A new strategy is proposed to compute the local influence distance at each movable mesh point. This strategy not only helps to exclude unnecessary donor points from the computation of the new position of the mesh point, but also gets those viscous elements stiffened appropriately such that they are no longer inverted easily. Further improvements on the efficiency of the proposed algorithm are achieved by parallelising the algorithm and developing a bounding box technique to speed up the procedure of searching donor points. Meanwhile, the robustness of the proposed algorithm in the case of large boundary movement is enhanced by incorporating a state-of-the-art multi-step technique. Various numerical experiments are conducted and the results show that the proposed algorithm could treat cases involving complex boundary movements at a low level of computing consumptions.

Keywords: mesh deformation; local interpolation; acceleration method; parallel algorithm.

DOI: 10.1504/PCFD.2018.10019984

Progress in Computational Fluid Dynamics, An International Journal, 2019 Vol.19 No.5, pp.282 - 292

Received: 10 Jun 2017
Accepted: 03 Jan 2018

Published online: 04 Sep 2019 *

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