Turbulence Modeling of Surface Water Flow and Transport: Part V

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Abstract
The last paper in the five part series, this paper presents an evaluation of the status of turbulence model—based surface water models and concludes with the literature citations. Two classes of models are evaluated: hydraulic engineering and environmental hydraulics. A table lists the eight major categories of problems. Also listed are citations for the types of turbulence models used in recent solutions to these problems. From this summary table a number of subjective impressions are discussed. In general, almost all the relevant problem classes have been performed with some form of advanced turbulence model; however, the hydraulic engineering subclass is the most frequently performed. As positive as this impact is it has not been the case that practitioners have adopted turbulence models to any great degree. The reason for this skepticism is the lack of objective methods of performance evaluation and the lack of any data taken with sufficient precision to establish the credibility of one turbulence model formulation over another. Creation of a library of high quality data for flow of relevance to hydraulic engineers is suggested.