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Experiments on Turbulence and Near Bank Vorticities in an Open Channel Sharp Bend

Author(s): Alireza Farhadi; Christine Sindelar; Michael Tritthart; Helmut Habersack

Linked Author(s): Helmut Habersack, Michael Tritthart

Keywords: No Keywords

Abstract: Turbulence has a significant influence on fluvial processes. Especially in the sharp bends of geometrically complex natural streams, the interaction of turbulence and flow three-dimensionalities is considerable. Here, generation and evolution of streamwise vorticity in an open channel bend is assessed by means of term-by-term experimental investigations. As a result, corresponding mechanisms are shown and analysed. In addition, based on the homogeneity term of vorticity equation, the applicability of a widely used simplified equation of streamwise vorticity is discussed. The presented comparison reaffirms the inadequacy of the equation in order to estimate near bank vorticities.


Year: 2018

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