Modeling Free-Surface Flow in Rectangular Shallow Basins by Using Lattice Boltzmann Method
Publication: Journal of Hydraulic Engineering
Volume 137, Issue 12
Abstract
The free-surface flows in rectangular basins are studied by the lattice Boltzmann model for shallow-water equations including flow turbulence (LABSWE). Asymmetrical flows occurring in the basins with different ratios of length to width are simulated. The predicted results are compared with corresponding experiments and show reasonable agreement. This indicates that the present model can produce solutions with accuracy similar to the conventional method with an algebraic model for flow turbulence. Furthermore, the effects of the Froude number and bed friction on flow asymmetry and reattachment length are investigated. The results show that the flow becomes less asymmetrical and the reattachment length grows with the increase of either the Froude number or bed friction.
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Acknowledgments
The authors are very grateful to Dr. H. F. Liu for his suggestions on this paper. The first author has been supported by the China Scholarship Council and the Overseas Research Students Awards Scheme (ORSAS, UK).
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© 2011 American Society of Civil Engineers.
History
Received: May 30, 2009
Accepted: Jun 6, 2011
Published online: Nov 15, 2011
Published in print: Dec 1, 2011
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