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Development of a highly accurate interpolation method for mesh‐free flow simulations I. Integration of gridless, particle and CIP methods
Author(s) -
Tanaka Nobuatsu
Publication year - 1999
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/(sici)1097-0363(19990830)30:8<957::aid-fld868>3.0.co;2-7
Subject(s) - interpolation (computer graphics) , computer science , algorithm , flow (mathematics) , mesh generation , mathematical optimization , finite volume method , computational fluid dynamics , computational science , mathematics , mechanics , finite element method , geometry , engineering , physics , computer graphics (images) , animation , structural engineering
A simple, efficient, flexible and accurate interpolation method, CIVA, is introduced for use with mesh‐free methods for flow simulations. The method enables mesh‐free cubic interpolation with the local co‐ordinate system, such as volume and area co‐ordinates, by utilizing the concept of the CIP scheme and allows the development of new highly accurate mesh‐free methods. The mesh‐free methods integrate the gridless, particle and CIP methods since they have flexibility in the treatment of moving calculation points. For achieving high accuracy with the CIVA method, it is also important to correctly evaluate particle movement. The improvement of the evaluating algorithm is another objective of this study. The validity of the algorithms is confirmed by applying them to the convection and convection–diffusion problems. Since the CIVA‐based mesh‐free methods enable flexible, efficient and accurate fluid simulation, they make it possible to perform highly accurate simulations of many kinds of problems that involve complicated geometries and phenomena. Copyright © 1999 John Wiley & Sons, Ltd.