The Effects of Different Shaped Baffle Blocks on the Energy Dissipation
Stilling basins can be defined as energy dissipaters constructed of the irrigation systems. This study aims at investigating the performance of the new seven baffle blocks design in terms of reducing the dimensions of stilling basins in irrigation systems. In order to assess the hydraulic efficiency of a new model for baffle block used in stilling basins, a Naval Research Laboratory (NRL) has conducted. The results of this study demonstrate that the performance of the new baffle block, in term of hydraulic jump length reduction and hydraulic energy dissipation, it's better than standard blocks. However, the ratios of the drag resistance attributed to the new baffles block (FB / F2) have been larger than that applied on the normal block. It was found that the new block dissipates the energy by 9.31% more than the concrete block, and decreases the length of the hydraulic jump by 38.6% in comparison with the standard blocks. However, the new block maximizes the drag force ratio by 98.6% in comparison with the standard baffle blocks. The findings indicated that in terms of energy reduction and dissipation in the length of the hydraulic jump, the new block is superior to the other kinds.
H. Samadi-Boroujeni, M. Ghazali, B. Gorbani, R. Fattahi Nafchi , "Characteristics of hydraulic jump on corrugated beds", Canadian Journal of Civil Engineering volume 40 issue 9 on (September 2013): 841-847. doi:10.1139/cjce-2012-0019 .
Hashim, K. S., Shaw, A., Al Khaddar, R., Ortoneda Pedrola, M.and Phipps, D." Defluoridation of drinking water using a new flow column-electrocoagulation reactor (FCER)" - Experimental, statistical, and economic approach. J Environ Manage, 197: (2017a) 80-88. doi:10.1016/j.jenvman.2017.06.075.
Hashim, K. S., Shaw, A., Al Khaddar, R., Pedrola, M. O.and Phipps, D." Energy efficient electrocoagulation using a new flow column reactor to remove nitrate from drinking water" - Experimental, statistical, and economic approach. J Environ Manage, 196: (2017b) 224-233. doi:10.1016/j.jenvman.2017.03.017.
Hashim, K. S., Shaw, A., Al Khaddar, R., Pedrola, M. O. and Phipps, D. "Iron removal, energy consumption and operating cost of electrocoagulation of drinking water using a new flow column reactor". Journal of Environmental Management, 189: (2017c), 98-108. doi:10.1016/j.jenvman.2016.12.035.
Hashim, K. S., Khaddar, R. A., Jasim, N., Shaw, A., Phipps, D., Kota, P., Pedrola, M. O., Alattabi, A. W., Abdulredha, M.and Alawsh, R. "Electrocoagulation as a green technology for phosphate removal from River water". Separation and Purification Technology, 210, (2018),135-144. doi:10.1016/j.seppur.2018.07.056.
Takahashi, M., and Ohtsu, I. "Aerated Flow Characteristics of Skimming Flow over Stepped Chutes". Journal of Hydraulic Research, 50(4):(2012),427-434. doi:10.1080/00221686.2012.702859.
Hunt, S., Kadavy, K., and Hanson, G. "Simplistic Design Methods for Moderate-Sloped Stepped Chutes". J. Hydraul. Eng., volume 140 issue 12: (2014), page 04014062, doi:10.1061/(asce)hy.1943-7900.0000938 .
Hunt, S. L. and Kadavy, K. C. "Flow depth and energy coefficient relationships for stepped spillways." In: Hubert Chanson and Luke Toombes, Hydraulic structures and society - Engineering challenges and extremes. 5th IAHR International Symposium on Hydraulic Structures, Brisbane, Australia, (1-9). (June 2014) 25-27. doi:10.14264/uql.2014.25.
Chanson, H., Bung, D., and Matos, J. "Stepped spillways and cascades. In .Energy Dissipation in Hydraulic Structures". IAHR Monograph, CRC Press, Taylor & Francis Group, Leiden, The Nettherlands, H. Chanson Editor, pp. (2015) 45-64. doi:10.1201/b18441-4
Meireles I., Fabian A. Bombardelli, Jorge Matos, "Air Entrainment Onset in Skimming Flows On Steep Stepped Spillways" Journal of Hydraulic Research volume 52 issue 3, (4 May 2014), 375 to 385, doi:10.1080/00221686.2013.878401
Meireles, I., Renna, F., Matos, J. and Bombardelli, F.A." Skimming, Nonaerated Flow on Stepped Spillways over Roller Compacted Concrete Dams". Journal of Hydraulic Engineering, 138(10): (2012), 870-877. doi:10.1061/(asce)hy.1943-7900.0000591
Bung, D.B. "Developing Flow in Skimming Flow Regime on Embankment Stepped Spillways". Journal of Hydraulic Research, 49(5), (2011): 639-648, doi: 10.1080/00221686.2011.584372 .
Pfister, M. and Hager, W.H." Self-entrainment of Air on Stepped Spillways". International Journal of Multiphase Flow, 37(2), (2011), 99-107. doi:10.1016/j.ijmultiphaseflow.2010.10.007.
Ellayn A. F., and Zhi-lin Sun. "Hydraulic Jump Basins with Wedge-Shaped Baffles" .Journal of Zhejiang University-Science A (Applied Physics & Engineering) 13(7): (2012) 519-525. doi:10.1631/jzus.a1200037.
Abdeen M.A. , Abdin A.E., W. Abbas, "Simulation and prediction for energy dissipaters and stilling basins design using artificial intelligence technique", Cogent Engineering vol. 2 No. 1. (Mar 2015), doi.org/10.1080/23311916.2015.1018705.
Ezizah, G., N. Yousif and S. Mostafa,. "Hydraulic jumps on new roughened beds". Asian J. Applied Sci., 5: (2012) 96-106. doi:10.3923/ajaps.2012.96.106.
Valero,D.Garcia-Bartual,R.,and Marco, J. "Optimisation of Stilling Basin Chute Blocks Using a Calibrated Multiphase RANS Model". In Proc, 5thInternational Junior Researcher and Engineer Workshop on Hydrulic Structures. Spa, Belgium, 28-30, (August 2015).
Tiwari, H. L., A. Goel, and V. K. Gahlot. "Experimental study of sill controlled stilling basins for pipe outlet." International Journal of Civil Engg. Research 2, no. 2 (2011): 107-117.
Tiwari HL, Gahlot VK, Tiwari S." Reductionof scour depth downstream of pipe outletstilling basin using end sills. International Journal of Engineering Sciences. 2 (7), (2013): 20-25.
Abdelhaleem F.S. "Effect of semi-circular baffle blocks on local scour downstream clear-overfall weirs". Ain Shams Engineering Journal volume 4 issue 4, (2013) ,675–684. doi:10.1016/j.asej.2013.03.003.
Mohamed YA, Saleh YK, and Ali AM."Studying the effect of different configuration of sill over stilling basin on flow characteristics behind radial gate". (Case Study Naga Hammadi Regulator), JES, Assiut University, Faculty of Engineering, 43 (3), (2015), pp311- 329.
Elsaeed GH, Ali AM, Abdelmageed NB, and Ibrahim AM. " Effect of End Step Shape in the Performance of Stilling Basins Downstream Radial Gates". Journal of Scientific Research & Reports, 9 (1): (2016) pp1:9. doi:10.9734/jsrr/2016/21452.
Abdelhaleem F.S." Hydraulics of submerged radial gates with a sill", ISH Journal of Hydraulic Engineering volume 23 issue 2: (2017): 177-186. doi:10.1080/09715010.2016.1273798.
Habibzadeh, Alireza, Mark R. Loewen, and Nallamuthu Rajaratnam. “Mean Flow in a Submerged Hydraulic Jump with Baffle Blocks.” Journal of Engineering Mechanics 140, no. 5 (May 2014): 04014020. doi:10.1061/(asce)em.1943-7889.0000713.
Ibrahim M. M,"Improve the Efficiency of Stilling Basin Using Different Types of Blocks". American Journal of Engineering Research (AJER), Volume-6, Issue-8, (2017) pp-295-304.
Ali Abbas, Haider Alwash and Ali Mahmood," Effect of baffle block configurations on characteristics of hydraulic jump in adverse stilling basins", MATEC Web of Conferences 162, (2018), 03005. doi.org/10.1051/matecconf/201816203005
Jaafar S. Maatooq & Enass R. Taleb,"The Effects of Baffle Blocks Locations and Blockage Ratio on the Sequent Depth and Velocity Distribution of Forced Hydraulic Jump", 7th International Symposium on Hydraulic Structures, Aachen, Germany, 15-18 May. (2018).
Al- Husseini T. R., "A Novel Experimental Work and Study on Flow and Energy Dissipation over Stepped Spillways, Journal of Babylon University, Engineering Sciences, No. (4), Vol. (24), (2016).
Alsabawi, E.I." Hydrulic Performance of stilling basins of unconventional attachments". MS.c.in civil engineering department, engineering collage, Tikret University, Iraq, (2002).
Sabbagh-Yazdi, Saeed-Reza, and Majid Bavandpour. “Numerical Experiments on Using Incline Collar Rings for Controlling Mean and Fluctuating Forces on Circular Bridge Piers.” Journal of Fluids and Structures 91 (November 2019): 102696. doi:10.1016/j.jfluidstructs.2019.102696.
Hayder, A.M. “A Laboratory Study on Stilling Basin with Semicircular Rough Bed Elements ", Jordan Journal of Civil Engineering, Volume 11, No. 2, 2017.
Bestawy, Ashraf. "New shapes of baffle piers used in stilling basins as energy dissipators." Asian Trans. Eng. (ATE) 3, no. 1 (2013): 1-7.
Abbas A., Alwash A., Mahmood A., " Effect of baffle block configurations on characteristics of hydraulic jump in adverse stilling basins", MATEC Web of Conferences volume 162 on page 03005(2018). doi:10.1051/matecconf/201816203005.
Jaafar S. Maatooq, Enass R. Taleb," The Effects of Baffle Blocks Locations and Blockage Ratio on the Sequent Depth and Velocity Distribution of Forced Hydraulic Jump", 7th International Symposium on Hydraulic Structures Aachen, Germany, 15-18, (May 2018).
Bejestan, M.S., and Neisi, K. "A new roughened bed hydraulic jump stilling basin". Bejestan, M.S., and Neisi, K. “A new roughened bed hydraulic jump stilling basin”. Asian J. of Applied Sci., 2 (5), (2009) 436-445, doi:10.3923/ajaps.2009.436.445.
Ryecroft, Samuel, Andrew Shaw, Paul Fergus, Patryk Kot, Khalid Hashim, Adam Moody, and Laura Conway. “A First Implementation of Underwater Communications in Raw Water Using the 433 MHz Frequency Combined with a Bowtie Antenna.” Sensors 19, no. 8 (April 16, 2019): 1813. doi:10.3390/s19081813.
Teng, Kah, Patryk Kot, Magomed Muradov, Andy Shaw, Khalid Hashim, Michaela Gkantou, and Ahmed Al-Shamma’a. “Embedded Smart Antenna for Non-Destructive Testing and Evaluation (NDT&E) of Moisture Content and Deterioration in Concrete.” Sensors 19, no. 3 (January 28, 2019): 547. doi:10.3390/s19030547.
Hashim, Khalid S., N H Al-Saati, Saif Salah Alquzweeni, Salah L. Zubaidi, Patryk Kot, L. Kraidi, Ameer H. Hussein, Rafid Alkhaddar, Andy Shaw, and Reham Alwash. “Decolourization of Dye Solutions by Electrocoagulation: An Investigation of the Effect of Operational Parameters.” IOP Conference Series: Materials Science and Engineering 584 (August 15, 2019): 012024. doi:10.1088/1757-899x/584/1/012024.
Hashim, Khalid S., Ibijoke Adeola Idowu, Nisreen Jasim, Rafid Al Khaddar, Andy Shaw, David Phipps, P. Kot, et al. “Removal of Phosphate from River Water Using a New Baffle Plates Electrochemical Reactor.” MethodsX 5 (2018): 1413–1418. doi:10.1016/j.mex.2018.10.024.
- There are currently no refbacks.
Copyright (c) 2020 laith shaker al-zubaidi, Nassrin Jassim hussien AL-Mansori, Thair Jabbar. Mizhir Alfatlawi, Khalid S. Hashim
This work is licensed under a Creative Commons Attribution 4.0 International License.