Journal of Marine Science and Technology

Journal of Marine Science and Technology

Determine the effect of roughness on hydraulic jump characteristics in divergent stilling basin

Document Type : Original Manuscript

Authors
Mohammad Hosein Noralah Dezfouli 1, 2
amir abas kamanbedast 3
Alireza Masjedi 3
Mohammad Heidarnejad 3
Mohammad Hosein Purmohammadi 4
1 Department of Water Science Engineering, Khouzestan Science and Research Campus, Islamic Azad University, Ahvaz, Iran.
2 Department of Water Science Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
3 Department of Water Science Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
4 Department of Water Science Engineering, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran.
10.22113/jmst.2020.221765.2356
Abstract
One of the measures to control the hydraulic jump at the downstream of hydraulic structures and to provide required sequent depth is to use a stilling basin with sudden contraction. Previous studies have shown that in this basin the jump length increases compare to the classical jump. On the other hand, it has been shown that roughening the bed is a measure that can be used to decrease the jump length. Therefore, it can bring a question that by roughening the bed of sudden contraction stilling basin how much can decrease the jump length? Therefore, in this study the effect of roughness on jump length at the mentioned stilling basin has been investigated. The tests have performed in a flume of 12-meter-long, 0.8-meter-wide and 0.7-meter height. The contraction ratio was 0.33 and the Froude number ranged between 2 to 10. The results have shown that the roughness can decrease the jump length up to 31% compare to the classic jump and can decrease up to 12% compare to the smooth bed of sudden contraction stilling basin. The jump length is equal to the USBR type II. It was found that the roughness can decrease the roller jump up to 20 percent compare to the sudden contraction of smooth bed.
Keywords
hydraulic jump
sudden contraction
jump length
stilling basin
roughness

Subjects

Abdulmatin,M, Rabiqul hasan,M and Ashraful Islam,M. 2008.”Experimental On Hydraulic Jump in Sudden Expansion in a Sloping Rectangular Channel”. Journal of Civil Engineering (IEB, 36)-65-77.
Alhamid, A.A .2004. S-jump characteristics on sloping basins. Journal of Hydraulic research.
Alhamid, A.A. 1994. Effective roughness on horizontal rectangular stilling basins. Transaction on Ecology and the Environment, Vol. 8 (http: //www.witpress.com, ISSN 1743-3541)
Allahdaddy K, Kazemianzadeh A., Shafei Bajestan M., 2008. Experimental Investigation of the Influence of Roughness Height on the Concentrated Depth Ratio and Length of Hydraulic Jump Rolling in Relaxation Pools, 3rd Iran Water Resources Management Conference, Tabriz University, Iran
Bahrami, H., Ghomeshi, M., Kashefi por, S., Salehi Neyshabouri, S. Investigation of characteristics of density current because of regime changes. Journal of Marine Science and Technology, 2017; 16(1): 112-121.
Boroujerdi, G., kamanbedast, A. Investigation of porosity of Hexapod materials on scouring in permeable spills. Journal of Marine Science and Technology, 2020; 18(4): 49-61.
Carolo, F.G., Ferro, V., and Pam Pallone, V .2007. Hydraulic Jumps on rough beds. J. of Hydraulic Engrg., ASCE, 133 (9): 989-999. DOI: 10.1061/ (ASCE) 0733-9429 (2007) 133: 9(989).
Ead, S. A., Rajaratnam, N. 2002. Hydraulic Jumps on corrugated Beds. Journal of hydraulic Engineering, ASCE, Vol. 128, No. 7, PP. 656-663. DOI: 10.1061/ (ASCE) 0733-9429 (2002) 128:7 (656).
Hosseini S. M., Abrishami J. 2003. Open Channel Hydraulics. Third Edition. Imam Reza University press. Mashhad, Iran, P 613
Hager, W. H. and Bremen, R. 1989. Classical Hydraulic Jump: Sequent Depths Ratio. Journal of Hydraulic Research IAHR, Vol. 27, No. 5, PP. 566-585.
Hager, w, Bremen, R. 1993. T-jump in abruptly expanding channel. Journal of Hydraulic research.
Herbrand, K. 1973. The Spatial Hydraulic Jump. Journal of Hydraulic Research. Pages 205-2018
Hager W.H., Bermen R. and Kawagoshi N. 1990. Classic Hydraulic Jump: Length of Roller. J. Hydraul. Res. Pages 591-608
Izadjoo F., Shafei Bajestan M., Bina M. 2005. Hydraulic Jump Characteristics on a Trapezoidal Corrugated Bed. The scientific journal of agriculture (SJA). Page(s) 107 To 122.
Izadjoo F., Shafei Bajestan M. 2007. Corrugated Bed Hydraulic Jump Stilling Basin. Journal of Applied Sciences
Kazemianzadeh A., Shafei Bajestan M. 2008. Experimental study of the effect of roughness arrangement on hydraulic jump characteristics in stilling basin, 3rd Iran Water Resources Management Conference, Tabriz University, Iran
Matin M.A., Negm A.M. El-Said A.A, and Alhamid A.A. 1997. Prediction of Sequent Depth Ratio of Free Hydraulic Jump in Abruptly enlarged Channels. Egyptian Journal for Engineering Sciences & Technology. Pages 31-36.
Mohamed Ali, H. S. 1991. Effect of Roughened-Bed Stilling Basin on Length of Rectangular Hydraulic Jump. Journal of hydraulic Engineering, ASCE, Vol. 117, No. 1, PP. 83-93.
Peterka A.J. 1958. Hydraulic Design of Stilling Basins and Energy Dissipaters. Engineering Monograph NO. 25. V. S. Bureau of Reclamation, Denver
Rajaratnam N. 1967. Hydraulic Jumps. Advances in Hydro Science. Pages 197-280
Rajaratnam N. 1968. Hydraulic Jump on Rough Bed. Transactions of the Engineering Institute of Canada. Pages 1-8
Rezaul,hasan, M, Abdulmatin,M. 2009. Experimental Study for Sequent Depth Ratio of Hydraulic Jump in Horizontal Expanding Channel. Journal of Civil Engineering (IEB, 37)-1-9.
Shafei Bajestan M., Neisi K. 2003. Effect Shape of Bed Roughness on Hydraulic Jump Length in Rectangular Channels, Iranian Hydraulic Association. Page 29-40
Shafei Bajestan M., Neisi K. 2004. Effect Shape of Roughness on the Sequent Depth Ratio of Hydraulic Jump. Water and Soil Science Journal. Tabriz University, Iran. Pages 165-176.
Journal of Marine Science and Technology
Volume 21, Issue 1
Winter 2022
Pages 81-91

  • Receive Date 29 February 2020
  • Revise Date 20 May 2020
  • Accept Date 30 May 2020
  • Publish Date 21 March 2022