1999•Journal of Hydraulic ResearchRequires access

Large-eddy simulation of flow in a rectangular open channel

J. Shi, T.G. Thomas, John James Williams

Abstract

Turbulent flow in a narrow open channel is investigated using the large-eddy simulation (LES) technique in which the surface is allowed to freely deform. A relatively large Reynolds number of 90,400 (defined as 4RUmean/) is used in the simulation and it is shown that good resolution is required in order to reproduce the effects of the turbulence-driven secondary currents. The simulated results are in good agreement with experimental measurements and previous calculations.

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Key concepts: Large eddy simulation, Turbulence, Open-channel flow, Mechanics, Reynolds number, Flow (mathematics), Physics, Channel (broadcasting)