Please use this identifier to cite or link to this item:
|Title:||SVD-GFD scheme to simulate complex moving body problems in 3D space|
Generalized finite difference
Hybrid meshfree-and-Cartesian grid
|Citation:||Wang, X.Y., Yu, P., Yeo, K.S., Khoo, B.C. (2010-03-20). SVD-GFD scheme to simulate complex moving body problems in 3D space. Journal of Computational Physics 229 (6) : 2314-2338. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jcp.2009.11.037|
|Abstract:||The present paper presents a hybrid meshfree-and-Cartesian grid method for simulating moving body incompressible viscous flow problems in 3D space. The method combines the merits of cost-efficient and accurate conventional finite difference approximations on Cartesian grids with the geometric freedom of generalized finite difference (GFD) approximations on meshfree grids. Error minimization in GFD is carried out by singular value decomposition (SVD). The Arbitrary Lagrangian-Eulerian (ALE) form of the Navier-Stokes equations on convecting nodes is integrated by a fractional-step projection method. The present hybrid grid method employs a relatively simple mode of nodal administration. Nevertheless, it has the geometrical flexibility of unstructured mesh-based finite-volume and finite element methods. Boundary conditions are precisely implemented on boundary nodes without interpolation. The present scheme is validated by a moving patch consistency test as well as against published results for 3D moving body problems. Finally, the method is applied on low-Reynolds number flapping wing applications, where large boundary motions are involved. The present study demonstrates the potential of the present hybrid meshfree-and-Cartesian grid scheme for solving complex moving body problems in 3D. © 2009 Elsevier Inc. All rights reserved.|
|Source Title:||Journal of Computational Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 13, 2018
WEB OF SCIENCETM
checked on Jun 13, 2018
checked on May 25, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.