Simulation of viscous and viscoelastic flows using a RBF-Galerkin approach
Article
Article Title | Simulation of viscous and viscoelastic flows using a RBF-Galerkin approach |
---|---|
ERA Journal ID | 3660 |
Article Category | Article |
Authors | Ho-Minh, D. (Author), Mai-Duy, N. (Author) and Tran-Cong, T. (Author) |
Journal Title | Australian Journal of Mechanical Engineering |
Journal Citation | 9 (2), pp. 101-112 |
Number of Pages | 12 |
Year | 2012 |
Publisher | Taylor & Francis |
Place of Publication | Sydney, Australia |
ISSN | 1448-4846 |
Digital Object Identifier (DOI) | https://doi.org/10.7158/M10-719.2012.9.2 |
Abstract | In this paper, two-dimensional flows of viscous and viscoelastic fluids are simulated using radial-basis-function networks (RBFNs) and Cartesian grids. To solve the governing equations, high-order approximations based on one-dimensional integrated-RBFNs are employed to approximate the field variables and the Galerkin discretisation formulation is utilised to transform the differential equation into a set of algebraic equations. The main distinguishing feature of the above combination is that two processes, namely the representation of the field variables and the discretisation of the governing equations, are both based on integration. In sharp contrast to conventional Galerkin methods, derivative boundary conditions are presently imposed in an exact manner. Two test problems, namely natural convection of a Newtonian fluid in a concentric annulus and fully-developed flow of an Criminale-Ericksen-Filbey (CEF) fluid in a rectangular duct, are studied. Results obtained are compared with published data in the literature. |
Keywords | integrated RBFN; Galerkin approach; Cartesian grid; Newtonian fluid; viscoelastic fluid |
ANZSRC Field of Research 2020 | 490199. Applied mathematics not elsewhere classified |
401204. Computational methods in fluid flow, heat and mass transfer (incl. computational fluid dynamics) | |
490101. Approximation theory and asymptotic methods | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Computational Engineering and Science Research Centre |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q160q/simulation-of-viscous-and-viscoelastic-flows-using-a-rbf-galerkin-approach
1890
total views15
total downloads1
views this month0
downloads this month