Volume 6, Issue 1 (9-2021)                   NMCE 2021, 6(1): 1-9 | Back to browse issues page

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1- Professor, Department of Civil Engineering, Faculty of Engineering, University of Maragheh, Maragheh, Iran. , daneshfaraz@yahoo.com
2- M.sc Student, Department of Civil Engineering, University of Maragheh, Maragheh, East Azarbaijan, Iran.
3- Assistant Professor, Faculty of Engineering, Niccolò Cusano University, Rome, Italy.
4- Professor, School of Engineering, University of St. Thomas, St Paul, MN, USA.
Abstract:   (1052 Views)
The main purpose of this study is to provide a method to increase energy dissipation on an inclined drop. Therefore, three types of rough elements with cylindrical, triangular and bat-shaped geometries are used on the inclined slope in the relative critical depth range of 0.128 to 0.36 and the effect of the geometry of these elements is examined using Flow 3D software. The results showed demonstrate that the downstream relative depth obtained from the numerical analysis is in good agreement with the laboratory results. The application of rough elements on the inclined drop increased the downstream relative depth and also the relative energy dissipation. The application of rough elements on the sloping surface of the drop significantly reduced the downstream Froude number, so that the Froude number in all models ranging from 4.7~7.5 to 1.45~3.36 also decreased compared to the plain drop. Bat-shaped elements are structurally smaller in size, so the use of these elements, in addition to dissipating more energy, is also economically viable.
Full-Text [PDF 753 kb]   (534 Downloads)    
Type of Study: Research | Subject: General
Received: 2021/05/4 | Revised: 2021/06/29 | Accepted: 2021/07/12 | ePublished ahead of print: 2021/07/25

1. Abbaspour, A., Shiravani, P., and Hosseinzadeh dalir, A., "Experimental study of the energy dissipation on the rough ramps", ISH journal of hydraulic engineering, 2019, p. 1-9. [DOI:10.1080/09715010.2019.1652705]
2. Abraham, J.P., Sparrow, E.M., Gorman, J.M., Zhao, Y., and Minkowycz, W.J., "Application of an Intermittency model for laminar, transitional, and turbulent internal flows", Journal of Fluids Engineering, vol. 141, 2019, paper no. 071204. [DOI:10.1115/1.4042664]
3. Ahmad, Z., Petappa, N.M., and Westrich, B., "Energy dissipation on block ramps with staggered boulders", Journal of hydraulic engineering, vol. 135(6), 2009, p. 522-526. [DOI:10.1061/(ASCE)HY.1943-7900.0000039]
4. Babaali, H.R., Shamsai, A., and Vosoughifar, H.R., "Computational modeling of the hydraulic jump in the stilling basin with convergence walls using CFD codes", Arabian Journal for Science and Engineering, vol. 40(2), 2014, p. 381-395. [DOI:10.1007/s13369-014-1466-z]
5. Castillo, L.G., Carrillo, J.M., and Cacía, J.T., "Numerical simulations and laboratory measurements in hydraulic jumps", International conference on hydroinformatics. (2014, August) New York city.
6. Daneshfaraz, R., Aminvash, E., Esmaeli, R., Sadeghfam, S., and Abraham, J., "Experimental and numerical investigation for energy dissipation of supercritical flow in sudden contractions", Journal of groundwater science and engineering, vol. 8(4), 2020a, p. 396-406.
7. Daneshfaraz, R., Aminvash, E., Ghaderi, A., Kuriqi, A., and Abraham, J., "Three-dimensional investigation of hydraulic properties of vertical drop in the presence of step and grid dissipators", Symmetry, vol. 13 (5), 2021a, p. 895. [DOI:10.3390/sym13050895]
8. Daneshfaraz, R., Aminvash, E., Ghaderi, A., Abraham, J., and Bagherzadeh, M., "SVM performance for predicting the effect of horizontal screen diameters on the hydraulic parameters of a vertical drop", Applied sciences, vol. 11 (9), 2021b, p. 4238. [DOI:10.3390/app11094238]
9. Daneshfaraz, R., Bagherzadeh, M., Esmaeeli, R., Norouzi, R., and Abraham, J. "Study of the performance of support vector machine for predicting vertical drop hydraulic parameters in the presence of dual horizontal screens", Water supply, vol 21(1), 2021c, p. 217-231. [DOI:10.2166/ws.2020.279]
10. Daneshfaraz, R., and Ghaderi, A., "Numerical investigation of inverse curvature ogee spillways", Civil engineering journal, vol. 3(11), 2017, p. 1146-1156. [DOI:10.28991/cej-030944]
11. Daneshfaraz, R., Majedi Asl, M., and Bagherzadeh, M., "Experimental Investigation of the Energy Dissipation and the Downstream Relative Depth of Pool in the Sloped Gabion Drop and the Sloped simple Drop", AUT Journal of Civil Engineering, 2020b (In persian).
12. Daneshfaraz, R., Majedi Asl, M., Bazyar, A., Abraham, J., Norouzi, R., "The laboratory study of energy dissipation in inclined drops equipped with a screen", Journal of Applied Water Engineering and Research, 2020c, p. 1-10. [DOI:10.1080/23249676.2020.1799877]
13. Daneshfaraz, R., Minaei, O., Abraham, J., Dadashi, S., and Ghaderi, A., "3-D Numerical simulation of water flow over a broad-crested weir with openings", ISH Journal of Hydraulic Engineering, 2019, p.1-9. [DOI:10.1080/09715010.2019.1581098]
14. Daneshfaraz, R., Sadeghfam, S., and Kashani, M., "Numerical simulation of flow over stepped spillways", Research in civil engineering and environmental engineering, vol. 2(4), 2014, p. 190-198.
15. Ghaderi, A., Abbasi, S., Abraham, J., and Azamathulla, H.M., "Efficiency of trapezoidal labyrinth shaped stepped spillways", Flow measurement and instrumentation, vol. 72, 2020a. [DOI:10.1016/j.flowmeasinst.2020.101711]
16. Ghaderi, A., Daneshfaraz, R., Dasineh, M., and Di Francesco, S., "Energy dissipation and hydraulics of flow over trapezoidal-triangular labyrinth weirs", Water, vol. 12(7), 2020b, p. 1-18. [DOI:10.3390/w12071992]
17. Ghaderi, A., Daneshfaraz, R., Torabi, M., Abraham, and Azamathulla, H.M. "Experimental investigation on effective scouring parameters downstream from stepped spillways", Water supply, vol. 20(4), 2020c, p. 1-11. [DOI:10.2166/ws.2020.113]
18. Ghare, A.D., Ingle, R.N., Porey, P.D., and Gokhale, S.S. "Block ramp design for efficient energy dissipation", Journal of energy dissipation, vol. 136(1), 2010, p. 1-5. [DOI:10.1061/(ASCE)0733-9402(2010)136:1(1)]
19. Gorman, J.M., Sparrow, E.M., Smith, C.J., Ghoash, A., Abraham, J.P., Daneshfaraz, R., Rezezadeh, J., "In-bend pressure drop and post-bend heat transfer for a bend with partial blockage at its inlet", Numerical Heat Transfer A, vol, 73, 2018, p. 743-767. [DOI:10.1080/10407782.2018.1460564]
20. Jamil, M., and Khan, S.A., "Theorical study of hydraulic jump in circular channel section", ISH journal of hydraulic engineering, vol. 16(1), 2010, p. 1-10. [DOI:10.1080/09715010.2010.10514984]
21. Katourani, S., and Kashefipour, S.M., "Effect of the geometric characteristics of baffle on hydraulic flow condition in baffled apron drop", Irrigation sciences and engineering, vol. 37(2), 2012, p. 51-59.
22. Lai, Y.G., and Wu, K.A., "Three-dimensional flow and sediment transport model for free surface open channel flow on unstructured flexible meshes", Fluids, vol. 4(1), 2019, p. 1-19. [DOI:10.3390/fluids4010018]
23. Nayebzadeh, B., Lotfollahi yaghin, M.A., and Daneshfaraz, R., "Numerical investigation of hydraulic characteristics of vertical drops with screens and gradually wall expanding", Amirkabir journal of civil engineering, 2020 (In Persian).
24. Nurouzi, R., Daneshfaraz, R., and Bazyar, A., "The study of energy dissipation due to the use of vertical screen in the downstream of inclined drop by adaptive Neuro-Fuzzy inference system (ANFIS)", AUT journal of civil engineering, 2019, (In Persian).
25. Ohtsu, I., and Yasuda, Y., "Hydraulic jump in sloping channel", Journal of hydraulic engineering, vol. 117(7), 1991, p. 905-921. [DOI:10.1061/(ASCE)0733-9429(1991)117:7(905)]
26. Olsen, L., Abraham, J.P., Cheng, L.K., Gorman, J.M., and Sparrow, E.M., "Summary of forced-convection fluid flow and heat transfer for square cylinders of different aspect ratios ranging from the cube to a two-dimensional cylinder", Advances in Heat Transfer, Vol. 51, 2019, p. 351-457. [DOI:10.1016/bs.aiht.2019.05.002]
27. Pagliara, S., Das, R., and Palermo, M., "Energy dissipation on submerged block ramps", Journal of irrigation and drainage engineering, vol. 134(4), 2008, p.527-532. [DOI:10.1061/(ASCE)0733-9437(2008)134:4(527)]
28. Pagliara, S., and Palermo, M., "Effect of stilling basin geometry on the dissipative process in the presence of block ramps", Journal of irrigation and drainage engineering, vol. 138(11), 2012, p. 1027-1031. [DOI:10.1061/(ASCE)IR.1943-4774.0000505]
29. Simsek, O., Akoz, M.S, and Soydan, N.G., "Numerical validation of open channel flow over a curvilinear broad-creasted weir", Progress in computational fluid dynamics an international journal, vol. 16(6), 2016, p. 364-378. [DOI:10.1504/PCFD.2016.080055]
30. Sharif, N., and Rostami, A., "Experimental and numerical study of the effect of flow sepration on dissipating energy in compound bucket", APCBEE procedia, vol. 9, 2014, p. 334-338. [DOI:10.1016/j.apcbee.2014.01.059]
31. Sparrow, E.M., Tong, J.C.K., and Abraham, J.P., "Fluid flow in a system with separate laminar and turbulent zones", Numerical Heat Transfer A, vol. 53(4), 2008, p. 341-353. [DOI:10.1080/10407780701454162]
32. Sparrow, E.M., Gorman, J.M., Abraham, J.P., and Minkowycz, W.J., "Validation of turbulence models for numerical simulation of fluid flow and convective heat transfers", Advances in Heat Transfer, vol. 49, 2017, p. 397-421. [DOI:10.1016/bs.aiht.2017.09.002]
33. Wagner, W.E., "Hydraulic model studies of the check intake structure-potholes East canal", Bureau of reclamation hydraulic laboratory report hyd, 1956, 41