%0 Journal Article
%T Numerical Simulation of Effect of Expansion Angle and End-sill Location on the Hydraulic Jump in Gradually Expanding Stilling Basins
%J Amirkabir Journal of Civil Engineering
%I Amirkabir University of Technology
%Z 2588-297X
%A Hooshyaripor, F.
%A Dehghan, M.
%A Mohajeri, S.H.
%D 2019
%\ 04/21/2019
%V 51
%N 1
%P 85-98
%! Numerical Simulation of Effect of Expansion Angle and End-sill Location on the Hydraulic Jump in Gradually Expanding Stilling Basins
%K Hydraulic jump
%K energy dissipation
%K Jump length
%K Conjugate depth
%K Fluent
%R 10.22060/ceej.2018.13151.5337
%X Expanding stilling basins not only are effective energy dissipators, but also appropriate translations between hydraulic structures. Hence, the present study aims at numerical simulation of the effect of end-sill location on the energy dissipation. Doing so, Fluent software was employed and hydraulic jump under two divergence angels and four end-sill locations in the range of 4 to 8 Froude number was examined. According to the results, for larger expansion angles, the sequent depth and jump length are lower and energy dissipation is much more. Moreover, as the end-sill closes to the basinâ€™s entrance, the lower sequent depth, shorter jump, and less energy dissipation are observed. For very close locations more instability in the flow surface are seen. Results showed that for a given expansion angel, improving the location of the end-sill can decease 20% the conjugate depth, enhance 90% the amount of energy dissipation, and reduce 26% the jump length.
%U https://ceej.aut.ac.ir/article_2810_b5117d8d6fef6c1e8765b383c1f8a3c8.pdf