Abstract
The present study aimed to investigate the effect of gabion structures with different lengths and heights in the downstream vertical drop on the energy dissipation values, relative depth, and downstream Froude number. Experiments were performed, for a simple vertical drop and a Gabion with two heights of 15 and 20 cm, Gabion structures with three relative heights (\({\mathrm{h}}_{\mathrm{d}}, \frac{1}{3}{\mathrm{h}}_{\mathrm{d}},\frac{2}{3}{\mathrm{h}}_{\mathrm{d}}\)), four relative lengths (\({\mathrm{h}}_{\mathrm{d}}, 2{\mathrm{h}}_{\mathrm{d}},3{\mathrm{h}}_{\mathrm{d}}, 4{\mathrm{h}}_{\mathrm{d}}\)) and porosity 50%. The hydraulic parameters obtained from the present study were compared to the results of a simple vertical drop. Based on experimental observations, inflow, transient, flow, and overflow were observed when the flow passed through the Gabion vertical drop models. Reducing the height of the Gabion structure and making it a step causes a pool area on the Gabion structure and reduces energy dissipation. For a constant relative length, as the relative height of the Gabion structure increases, the contact of the passing flow through the porous medium increases which leads to an increase in the energy dissipation of the flow. For a constant relative height of the Gabion, increasing the relative length of the gabion structure has little effect on the value of energy dissipation. The results showed that in all laboratory models, on average, the gabion structure caused a higher energy dissipation of the flow, (56%) compared to the simple vertical drop. The Froude number range was reduced from 3.8–5.7 to 0.41–2.65 with a gabion structure in the simple vertical drop.
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Abbreviations
- \(q(Q/B)\left[ {{\text{L}}^{{2}} {\text{T}}^{{ - 1}} } \right]\) :
-
Discharge of flow per unit
- \({\text{h}}_{{\text{d}}} \left[ {\text{L}} \right]\) :
-
Height of the vertical drop
- \({\text{h}}_{{\text{g}}} \left[ {\text{L}} \right]\) :
-
Height of the gabion drop
- \(y_{{\text{u}}} \left[ {\text{L}} \right]\) :
-
Upstream depth of the drop
- \(y_{{\text{c}}} \left[ {\text{L}} \right]\) :
-
Critical depth of the drop
- \(y_{{\text{d}}} \left[ {\text{L}} \right]\) :
-
Downstream depth of the drop
- \({\uprho }\left[ {{\text{ML}}^{{ - 3}} } \right]\) :
-
Density of water
- \(\frac{{y_{{\text{d}}} }}{h}\left[ - \right]\) :
-
Relative depth of downstream
- \(n\left[ - \right]\) :
-
Porosity
- \(\Delta {\rm E}\left[ {\text{L}} \right]\) :
-
Relative energy dissipation on the drop
- \({\text{E}}_{{\text{u}}} \left[ {\text{L}} \right]\) :
-
Energy in the upstream of the drop
- \({\text{l}}_{{\text{g}}} \left[ {\text{L}} \right]\) :
-
The length of the gabion structure
- \({\text{Fr}}_{{\text{d}}} \left[ { - } \right]\) :
-
Downstream Froude number
- \({\text{Re}}\left[ { - } \right]\) :
-
Reynolds number
- \({\upmu }\left[ {{\text{ML}}^{{ - 1}} {\text{T}}^{{ - 1}} } \right]\) :
-
Dynamic viscosity of water
- \(\frac{{y_{{\text{c}}} }}{h}\left[ - \right]\) :
-
Relative critical depth
- \(\frac{{\Delta {\rm E}}}{{{\text{E}}_{{\text{u}}} }}\left[ - \right]\) :
-
Relative energy dissipation
- \({\text{g}}\left[ {{\text{LT}}^{{ - 2}} } \right]\) :
-
Gravity acceleration
References
Esen II, Alhumoud JM, Hannan KA (2004) Energy loss at a drop structure with a step at the base. Water Int 29(4):523–529
Pagliara S, Chiavaccini P (2006) Energy dissipation on block ramps. J Hydraul Eng ASCE 132(1):41–48
Nayebzadeh B, Lotfollahi-yaghin M, Daneshfaraz R (2019) Experimental study of energy dissipation at a vertical drop equipped with vertical screen with gradually expanding at the downstream. Amirkabir J Civ Eng 52(12):7–7. https://doi.org/10.22060/ceej.2019.16493.6265(InPersian)
Hasannia V, Daneshfaraz R, Sadeghfam S (2019) Experimental investigating on hydraulic parameters of vertical drop equipped with combined screens. Amirkabir J Civ Eng 52(10):6–6. https://doi.org/10.22060/ceej.2019.16431.6223 (in Persian)
Daneshfaraz R, Hasannia V, Norouzi R, Sihag P, Sadeghfam S, Abraham J (2021) Investigating the effect of horizontal screen on hydraulic parameters of vertical drop. Iranian J Sci Technol Trans Civ Eng 45(3):1909–1917
Daneshfaraz R, Ghaderi A, Di Francesco S, Khajei N (2021) Experimental study of the effect of horizontal screen diameter on hydraulic parameters of vertical drop. Water Supply 21(5):2425–2436
Mirzaee R, Hosseini K, Mousavi F (2021) Numerical investigation on energy loss in vertical drop with horizontal serrated edge. J Hydraul 16(1):23–36. https://doi.org/10.30482/jhyd.2021.256774.1486 (in Persian)
Chinnarasri C, Donjadee S, Israngkura U (2008) Hydraulic characteristics of gabion-stepped weirs. J Hydraul Eng 134(8):1147–1152
Azizi, a., meftah halaghi, m., ziatabar ahmadi, m., and golmaei, s. (2008) Evaluating the affection of used material porosity on energy dissipation in gabion stepped weirs. J Agric Sci Nat Res 15(1):150–158 (in Persian)
Meftah HM, Azizi A, Dehghani A, Alhoseini N (2009) Energy dissipation of gabion stepped weirs by using impermiable plates. J Agric Sci Nat Res 16(2):234–241 (in Persian)
Salmasi F, Razi S, Hossinzadeh Dalir A (2021) Laboratory study of the hydraulics of flow in gabion stepped weirs. Amirkabir J Civ Eng 53(8):1–1. https://doi.org/10.22060/ceej.2020.17256.6502 (in Persian)
Wüthrich D, Chanson H (2014) Hydraulics, air entrainment, and energy dissipation on a Gabion stepped weir. J Hydraul Eng 140(9):04014046
Liu SI, Chen JY, Hong YM, Huang HS, Raikar RV (2014) Impact characteristics of free over-fall in pool zone with upstream bed slope. J Mar Sci Technol 22(4):476–486
Wuthrich D, Chanson H (2015) Aeration performances of a gabion stepped weir with and without capping. Environ Fluid Mech 15(4):711–730
Razi S, Salmasi F, Hoseinzade Dalir A (2019) Laboratory study of the effects of step number, slope and particle size on energy dissipation in gabion stepped weirs. Amirkabir J Civ Eng 51(4):749–756. https://doi.org/10.22060/ceej.2018.13984.5527 (in Persian)
Aal GMA, Fahmy MR, Elnikhely EA, El-Tohamy E (2019) Energy dissipation and discharge coefficient over stepped gabion and buttress gabion spillway. Technology 10(4):260–267
Al-Mansori NJH, Alfatlawi TJM, Hashim KS, Al-Zubaidi LS (2020) The effects of different shaped baffle blocks on the energy dissipation. Civ Eng J 6(5):961–973
Majedi Asl M, Daneshfaraz R, Chabokpour J, Ghorbani B (2021) Laboratory study of the performance of gabion sill on the energy dissipation of downstream of ogee weirs. Iranian J Soil Water Res 52(1):67–80. https://doi.org/10.22059/ijswr.2020.309322.668725 (in Persian)
Daneshfaraz R, Bagherzadeh M, Ghaderi A, Di Francesco S, Asl MM (2021) Experimental investigation of gabion inclined drops as a sustainable solution for hydraulic energy loss. Ain Shams Eng J 12(4):3451–3459
Daneshfaraz R, Majedi Asl M, Bagherzadeh M (2021) Experimental investigation of the energy dissipation and the downstream relative depth of pool in the sloped gabion drop and the sloped simple drop. Amirkabir J Civ Eng 53(9):4–4. https://doi.org/10.22060/ceej.2020.18059.6751(InPersian)
Salmasi F, Farsadizade D, Mohit H (2011) Experimental evaluation of energy dissipation over gabion stepped spillway. Water Soil Sci 21(4):152–164 (in Persian)
Bagherzadeh M, Mohammadi M, Daneshfaraz R, Dasineh M (2021) Comparison of Hydraulic parameters of simple and gabion inclined drops with stilling basin in the downstream of the structure. In: International science and innovation congress, Turkey, pp 39–45
Rajaratnam N (1976) Turbulent jets. Elsevier
Bagherzadeh M, Mousavi F, Manafpour M, Mirzaee R, Hoseini K (2022) Numerical simulation and application of soft computing in estimating vertical drop energy dissipation with horizontal serrated edge. Water Supply 22(4):4676–4689
Daneshfaraz R, Bagherzadeh M, Esmaeeli R, Norouzi R, Abraham J (2021) Study of the performance of support vector machine for predicting vertical drop hydraulic parameters in the presence of dual horizontal screens. Water Supply 21(1):217–231
Mohammad Nezhad H, Mohammadi M, Ghaderi A, Bagherzadeh M, Ricardo AM, Kuriqi A (2022) Flow resistance and velocity distribution in a smooth triangular channel. Water Supply 22(5):5253–5264
Daneshfaraz R, Aminvash E, Bagherzadeh M, Ghaderi A, Kuriqi A, Najibi A, Ricardo AM (2021) Laboratory investigation of hydraulic parameters on inclined drop equipped with fishway elements. Symmetry 13(9):1643
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Daneshfaraz, R., Mortazavi, S., Majedi Asl, M. et al. Laboratory study of energy dissipation on the gabion vertical drop. Innov. Infrastruct. Solut. 7, 328 (2022). https://doi.org/10.1007/s41062-022-00925-6
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DOI: https://doi.org/10.1007/s41062-022-00925-6