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    Velocity Distribution in Open Channel Flows: Analytical Approach for the Outer Region

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    Publication date
    2013-01-01
    Author
    Lassabatere, L.
    Pu, Jaan H.
    Bonakdari, H.
    Joannis, C.
    Larrarte, F.
    Keyword
    Velocity distribution; Open channel; Velocity dip; Smooth bed flow; Rough bed flow
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    This paper presents an integration procedure for the Reynolds-averaged Navier-Stokes equations for the determination of the distribution of the streamwise velocity using the vertical component. This procedure is dedicated to the outer region and central part of channels. The proposed model is applicable to both rough and smooth flow regimes, provided the velocity at the inner-outer boundary has been properly defined. To generate a simplified expansion, a number of hypotheses are proposed, focusing in particular on the analytical modeling of the vertical component by adopting a negligible viscosity. The proposed hypotheses are validated by the experimental data existing in the literature. The proposed simplified expansion is studied through a sensitivity analysis and proved consistent in regards to model experimental data. The proposed model seems capable of demonstrating different kinds of flows, including dip phenomenon flow patterns.
    URI
    http://hdl.handle.net/10454/11560
    Version
    No full-text in the repository
    Citation
    Lassabatere L, Pu JH, Bonakdari H et al (2013) Velocity Distribution in Open Channel Flows: Analytical Approach for the Outer Region. Journal of Hydraulic Engineering. 139(1): 37-43.
    Link to publisher’s version
    http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000609
    Type
    Article
    Collections
    Engineering and Informatics Publications

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