Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.compfluid.2012.05.012
Title: Extension of local domain-free discretization method to simulate 3D flows with complex moving boundaries
Authors: Zhou, C.H.
Shu, C. 
Keywords: Carangiform swimming
Domain-free discretization
Immersed boundary
Moving boundary
Non-boundary-conforming method
Unsteady flows
Issue Date: 15-Jul-2012
Source: Zhou, C.H., Shu, C. (2012-07-15). Extension of local domain-free discretization method to simulate 3D flows with complex moving boundaries. Computers and Fluids 64 : 98-107. ScholarBank@NUS Repository. https://doi.org/10.1016/j.compfluid.2012.05.012
Abstract: This paper is the first endeavor to present the local domain-free discretization (DFD) method for the solution of the three-dimensional Navier-Stokes equations. The computational domain may contain complex moving boundaries. The strategy of DFD is that the discrete form of partial differential equations at an interior point may involve some points outside the solution domain. The functional values at the exterior dependent points are evaluated by the approximate form of solution near the boundary. Compared to the previous work, the tedious task of constructing new interpolation tetrahedrons is eliminated, and this reduces the complexity of DFD implementation. An efficient algorithm for classifying mesh points is also presented. Simulation of flow around a stationary sphere is used to validate the numerical method, and three distinct flow regimes have been obtained with varied Reynolds numbers of up to 300. The ability of the method for flows with complex moving boundary is demonstrated by simulating flows over an undulating fish-like body. The results of force coefficient, structure of wake patterns and propulsive efficiency at critical Strouhal number have been presented. All predictions show a good agreement with the reference data. © 2012 Elsevier Ltd.
Source Title: Computers and Fluids
URI: http://scholarbank.nus.edu.sg/handle/10635/60268
ISSN: 00457930
DOI: 10.1016/j.compfluid.2012.05.012
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

6
checked on Dec 11, 2017

WEB OF SCIENCETM
Citations

3
checked on Dec 11, 2017

Page view(s)

27
checked on Dec 9, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.