Numerical investigation of flow pattern and components of three-dimensional velocity around a submerged T-shaped spur dike in a 90° bend
Autor: | Mohammad Vaghefi, Maryam Akbari, Yaser Safarpoor |
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Rok vydání: | 2016 |
Předmět: |
Wing
010504 meteorology & atmospheric sciences Computer simulation 0208 environmental biotechnology Metals and Alloys General Engineering Geometry 02 engineering and technology Flow pattern 01 natural sciences 020801 environmental engineering Vortex Transverse plane Spur Spur dike Geotechnical engineering Streamlines streaklines and pathlines Geology 0105 earth and related environmental sciences |
Zdroj: | Journal of Central South University. 23:2984-2998 |
ISSN: | 2227-5223 2095-2899 |
DOI: | 10.1007/s11771-016-3362-z |
Popis: | 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. |
Databáze: | OpenAIRE |
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