Abstract
This paper presents an adaptive collocation method with weighted extended PHT-splines. The authors modify the classification rules for basis functions based on the relation between the basis vertices and the computational domain. The Gaussian points are chosen to be collocation points since PHT-splines are C1 continuous. The authors also provide relocation techniques to resolve the mismatch problem between the number of basis functions and the number of interpolation conditions. Compared to the traditional Greville collocation method, the new approach has improved accuracy with fewer oscillations. Several numerical examples are also provided to test our the proposed approach.
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This research was supported by the National Natural Science Fondation of China under Grant Nos. 11601114, 11771420, 61772167.
This paper was recommended for publication by Editor-in-Chief GAO Xiao-Shan.
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Ni, Q., Deng, J. & Wang, X. An Adaptive Collocation Method with Weighted Extended PHT-Splines. J Syst Sci Complex 34, 47–67 (2021). https://doi.org/10.1007/s11424-020-9390-7
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DOI: https://doi.org/10.1007/s11424-020-9390-7