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Title: | A SVD-GFD Method to simulate 3D Moving Boundary Flow Problems | Authors: | WANG XIAOYONG | Keywords: | Incompressible Navier-Stokes, Moving body, Moving boundary, Mesh free method, 3D, Generalized finite difference | Issue Date: | 3-Apr-2008 | Citation: | WANG XIAOYONG (2008-04-03). A SVD-GFD Method to simulate 3D Moving Boundary Flow Problems. ScholarBank@NUS Repository. | Abstract: | A singular value decomposition based generalized finite difference scheme (SVD-GFD) is proposed for the simulation of three-dimensional (3D) flows with arbitrary geometry. The SVD-GFD scheme is based on 3D Taylor series expansion and second-order spatial accuracy is maintained. The ALE form of the incompressible Navier-Stokes equations is used to model the motion of the boundaries or bodies. The current method combines the merits of traditional finite difference method and mesh free method. The ALE form of the Navier-Stokes equations is integrated by a fractional time step method. The ALE-SVD-GFD method is applied on a series of 3D problems involving stationary and moving boundaries, such as the lid-driven cavity problem, the oscillating sphere problem, steady and unsteady flow past a sphere, flow past a torus, and 3D flapping wing flows etc. The results compare well with those in the literature. The ALE-SVD-GFD method has been successfully implemented to simulate the 3D flows driven by a flapping and rotating wing, and by two independently actuated wings. The present work demonstrates the potential of the ALE-SVD-GFD method for the simulation of complex 3D moving boundary/body problems. | URI: | http://scholarbank.nus.edu.sg/handle/10635/13225 |
Appears in Collections: | Ph.D Theses (Open) |
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02 Acknowledgements.pdf | 15.26 kB | Adobe PDF | OPEN | None | View/Download | |
03 Table of contents.pdf | 20.67 kB | Adobe PDF | OPEN | None | View/Download | |
04 Summary.pdf | 17.4 kB | Adobe PDF | OPEN | None | View/Download | |
05 List of tables.pdf | 10.43 kB | Adobe PDF | OPEN | None | View/Download | |
06 List of figures.pdf | 39.32 kB | Adobe PDF | OPEN | None | View/Download | |
07 List of symbols.pdf | 35.2 kB | Adobe PDF | OPEN | None | View/Download | |
08 Chapter 01.pdf | 83.62 kB | Adobe PDF | OPEN | None | View/Download | |
09 Chapter 02.pdf | 188.32 kB | Adobe PDF | OPEN | None | View/Download | |
10 Chapter 03.pdf | 3.91 MB | Adobe PDF | OPEN | None | View/Download | |
11 Chapter 04.pdf | 81.23 kB | Adobe PDF | OPEN | None | View/Download | |
12 Chapter 05.pdf | 4.23 MB | Adobe PDF | OPEN | None | View/Download | |
13 Chapter 06.pdf | 10.69 MB | Adobe PDF | OPEN | None | View/Download | |
14 Chapter 07.pdf | 31.77 kB | Adobe PDF | OPEN | None | View/Download | |
01 Cover N thesis title.pdf | 18.56 kB | Adobe PDF | OPEN | None | View/Download | |
15 References N Appendix.pdf | 120.63 kB | Adobe PDF | OPEN | None | View/Download |
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