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Effects of floaters on the free surface profiles of river flows

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Abstract

The presence of floaters should be taken into account when dealing with hydraulic analyses, e.g. when boats are moored along the river banks or large wood is expected to be conveyed by the river flow during floods. Many approaches have been proposed so far in order to consider the effects of floaters upon the flow features. Usually, they rely on the numerical resolution of the governing equation for both the fluid and the solid phases. Hence, their computational cost can be inadequate at the early stage of hydraulic studies or when large scale analyses have to be performed. A simplified method to compute the value of the resistance coefficient able to reproduce the effects of floaters upon the flow levels is proposed herein. The method is intended to provide the hydraulic parameters to be used within standard hydraulic simulations for which the effects of floaters must be accounted for; this is obtained by means of a modified resistance coefficient.

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Authors and Affiliations

  1. Department of Civil, Construction-Architectural and Environmental Engineering (DICEAA), Environmental and Maritime Hydraulic Laboratory (LIam), University of L’Aquila, L’Aquila, Italy

    Marcello Di Risio

  2. Deparment of Civil Engineering and Computer Science, University of Rome “Tor Vergata”, Rome, Italy

    Paolo Sammarco

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  1. Marcello Di Risio
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  2. Paolo Sammarco
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Correspondence to Marcello Di Risio.

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Di Risio, M., Sammarco, P. Effects of floaters on the free surface profiles of river flows. Environ Fluid Mech 20, 527–537 (2020). https://doi.org/10.1007/s10652-019-09710-z

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  • DOI: https://doi.org/10.1007/s10652-019-09710-z

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