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Numerical investigation of flow pattern and components of three-dimensional velocity around a submerged T-shaped spur dike in a 90° bend

  • Geological, Civil, Energy and Traffic Engineering
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Abstract

Spur dike is one of the river training structures. This work presented a numerical simulation of flow field and three-dimensional velocity around a T-shaped spur dike located in bend using SSIIM model. The main objective of this work is to investigate the three-dimensional velocities and streamlines at transverse and longitudinal sections and plan views around the T-shaped spur dike in different submergence ratios (0, 5%, 15%, 25% and 50%). It is concluded that by increasing the submergence ratio from 5% to 50%, the maximum of scour is reduced; the maximum of longitudinal velocity increases by 7.7% and occurs at the water surface in spur dike axis. Near the bed, the maximum of vertical velocity occurs at the end of spur wing. By analyzing the streamlines at transverse sections, the followings were deduced for different submergence ratios: different dimensions and different positions of vortices around the spur dike.

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Authors and Affiliations

  1. Department of Civil Engineering, Persian Gulf University, Shahid Mahini Street, P.O. Box: 75169-13817, Bushehr, Iran

    Mohammad Vaghefi, Yaser Safarpoor & Maryam Akbari

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  1. Mohammad Vaghefi
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  2. Yaser Safarpoor
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  3. Maryam Akbari
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Correspondence to Mohammad Vaghefi.

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Vaghefi, M., Safarpoor, Y. & Akbari, M. Numerical investigation of flow pattern and components of three-dimensional velocity around a submerged T-shaped spur dike in a 90° bend. J. Cent. South Univ. 23, 2984–2998 (2016). https://doi.org/10.1007/s11771-016-3362-z

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  • DOI: https://doi.org/10.1007/s11771-016-3362-z

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