Author(s): Maurizio Leopardi

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Keywords: Roughness; hydraulic models

Abstract: This paper presents the results of an experimental survey carried out on geometrically similar hydraulic models in order to simulate free-surface gradually varied unsteady flow within both open and closed sections. In all of the cases observed, whilst the flow in the prototype is mainly governed by gravity, in the model it is also influenced by viscosity. Nevertheless, working within a limited range of variation of the Reynolds number, and adopting Froude’s similitude, has made possible to ignore such an influence in all of the analysed models.

DOI: https://doi.org/10.1080/00221686.2004.9728389

Year: 2004