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You are here : eLibrary : IAHR World Congress Proceedings : 32nd Congress - Venice (2007) : THEME C: Fluid Mechanics and Hydraulics : Turbulence modeling of solute transport in open-channel flows
Turbulence modeling of solute transport in open-channel flows
Author : Hyeongsik Kang and Sung-Uk Choi
Prediction of solute transport in a stream is important in many engineering applications. Solute transport in turbulent open-channel flows is affected by the mean flow and turbulence structure. Therefore, in order to predict the solute transport in such flows accurately, a reliable simulation model for the flow should be employed. In the present study, for flow, the RANS equations are solved with the Reynolds stress model. This model has been applied successfully to various open-channel flows. For solute transport, the Reynolds-averaged convection/diffusion equation is solved with the generalized gradient diffusion hypothesis. The developed model is applied to solute transport in a rectangular channel flow and in a compound channel flow. The mean velocity, pattern of secondary currents, and distribution of mean concentration and mean scalar flux are provided and compared with measured data in the literature. This demonstrates the modelís capability of predicting the solute transport in turbulent open-channel flows. The impact of secondary currents on solute transport and range of turbulent Schmidt numbers are also investigated
File Size : 315,506 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 32nd Congress - Venice (2007)
Article : THEME C: Fluid Mechanics and Hydraulics
Date Published : 01/07/2007
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