3D Numerical Simulation of Turbulent Shallow-Water Flow in Square Harbor
Publication: Journal of Hydraulic Engineering
Volume 125, Issue 1
Abstract
Three-dimensional computations of a homogeneous shallow-water cavity flow in a square harbor were carried out. The turbulent flow was driven by a stationary current in an adjacent model river. The standard single-length-scale k-ε turbulence was found to underestimate the effective horizontal eddy viscosity in the mixing layer. To model the nonisotropic behavior of the flow, a two-length-scale turbulence model has been implemented by adding a depth-averaged k-ε model to the existing numerical model TRISULA. This model accounts for large scale turbulence generated in the mixing layer by horizontal shear. Comparison with experimental results showed a significant improvement of the computational results while the increase in computational costs was negligible.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 125 • Issue 1 • January 1999
Pages: 26 - 31
History
Received: Sep 16, 1997
Published online: Jan 1, 1999
Published in print: Jan 1999
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