Experimental Investigation on 3D Flow around a Single T-Shaped Spur Dike in a Bend

  • Mohammad Vaghefi Associate Professor of Hydraulic Structures, Civil Engineering Department, Persian Gulf University
  • Masoud Ghodsian Professor of Hydraulic, Civil and Environment Engineering Department, Tarbiat Modares University
  • Maryam Akbari M.Sc Graduated Student of Hydraulic Structures, Civil Engineering Department, Persian Gulf University

Abstract

The flow field around a T-shaped spur dike located in a 90° bend is investigated experimentally. The three-dimensional Acoustic Doppler Velocimeter (ADV) was used for measuring the flow field. The comparison of the three dimensional components of velocity was made in different sections of the bend and the differences of the flow pattern along the bend was analyzed. The observations showed the significant effect of the spur dike on the secondary flow patterns. Some horizontal vortices with a counter-clock-wise direction were also observed in the up and down stream of the spur dike near the outer bank of the bend. In addition, the vortices and reverse flows in the up and down stream of the spur dike, the changes of the secondary flow and vorticity are also addressed in this study.

Keywords

flow pattern, T-Shaped spur dike, secondary flow, 90 degree bend, vorticity
Published
23-01-2017
How to Cite
VAGHEFI, Mohammad; GHODSIAN, Masoud; AKBARI, Maryam. Experimental Investigation on 3D Flow around a Single T-Shaped Spur Dike in a Bend. Periodica Polytechnica Civil Engineering, [S.l.], v. 61, n. 3, p. 462-470, jan. 2017. ISSN 1587-3773. Available at: <https://pp.bme.hu/ci/article/view/7999>. Date accessed: 26 sep. 2017. doi: https://doi.org/10.3311/PPci.7999.
Section
Research Article