Experimental investigation on the effect of different slot shapes and configurations on scour dimension downstream of flip buckets
Flip buckets at the end of a spillway can dissipate the flood discharge energy. Compared to other energy dissipators, this is a cost-effective structure. The formation of a scour hole downstream of a flip bucket is a topic of interest among hydraulic engineers. The current study investigated scourin...
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| Veröffentlicht in: | Water S. A. 2020-07, Vol.46 (3), p.458-464 |
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| creator | Eskandari, Amin Heidarnejad, Mohammad Masjedi, Alireza Purmohammadi, Mohammad Hosein Kamanbedast, Amirabbas |
| description | Flip buckets at the end of a spillway can dissipate the flood discharge energy. Compared to other energy dissipators, this is a cost-effective structure. The formation of a scour hole downstream of a flip bucket is a topic of interest among hydraulic engineers. The current study investigated scouring downstream of a flip bucket under two major scenarios: (i) free conditions, and (ii) slotted conditions with rectangular and triangular slots configured differently under four different discharge rates. In total, 20 experiments were conducted in this study. Results showed that the use of a deflector slot greatly affected the scour extent and depth, resulting in a greater scour reduction (53%) in the labyrinth rectangular slotted bucket compared to the solid bucket. The results were compared to empirical equations, and a high correlation was observed between them. In comparison, the Taraimovich equation produced more accurate results in control experiments, and the Damle-A and Damle-B equations produced more accurate results in experiments corresponding to labyrinth rectangular and triangular slotted buckets. |
| doi_str_mv | 10.17159/wsa/2020.v46.i3.8656 |
| format | Article |
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Compared to other energy dissipators, this is a cost-effective structure. The formation of a scour hole downstream of a flip bucket is a topic of interest among hydraulic engineers. The current study investigated scouring downstream of a flip bucket under two major scenarios: (i) free conditions, and (ii) slotted conditions with rectangular and triangular slots configured differently under four different discharge rates. In total, 20 experiments were conducted in this study. Results showed that the use of a deflector slot greatly affected the scour extent and depth, resulting in a greater scour reduction (53%) in the labyrinth rectangular slotted bucket compared to the solid bucket. The results were compared to empirical equations, and a high correlation was observed between them. In comparison, the Taraimovich equation produced more accurate results in control experiments, and the Damle-A and Damle-B equations produced more accurate results in experiments corresponding to labyrinth rectangular and triangular slotted buckets.</description><identifier>ISSN: 1816-7950</identifier><identifier>ISSN: 0378-4738</identifier><identifier>EISSN: 1816-7950</identifier><identifier>DOI: 10.17159/wsa/2020.v46.i3.8656</identifier><language>eng</language><publisher>Gezina: Water Research Commission</publisher><subject>Dimensional analysis ; Dimensions ; Discharge ; Downstream effects ; Empirical equations ; Energy dissipation ; Experiments ; Flip buckets ; Flood discharge ; Hydraulic engineering ; Hydraulics ; Laboratories ; Mathematical analysis ; Researchers ; Scour ; Scouring ; Spillways</subject><ispartof>Water S. A., 2020-07, Vol.46 (3), p.458-464</ispartof><rights>COPYRIGHT 2020 Water Research Commission</rights><rights>2020. 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A.</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Eskandari, Amin</au><au>Heidarnejad, Mohammad</au><au>Masjedi, Alireza</au><au>Purmohammadi, Mohammad Hosein</au><au>Kamanbedast, Amirabbas</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental investigation on the effect of different slot shapes and configurations on scour dimension downstream of flip buckets</atitle><jtitle>Water S. A.</jtitle><date>2020-07-01</date><risdate>2020</risdate><volume>46</volume><issue>3</issue><spage>458</spage><epage>464</epage><pages>458-464</pages><issn>1816-7950</issn><issn>0378-4738</issn><eissn>1816-7950</eissn><abstract>Flip buckets at the end of a spillway can dissipate the flood discharge energy. Compared to other energy dissipators, this is a cost-effective structure. The formation of a scour hole downstream of a flip bucket is a topic of interest among hydraulic engineers. The current study investigated scouring downstream of a flip bucket under two major scenarios: (i) free conditions, and (ii) slotted conditions with rectangular and triangular slots configured differently under four different discharge rates. In total, 20 experiments were conducted in this study. Results showed that the use of a deflector slot greatly affected the scour extent and depth, resulting in a greater scour reduction (53%) in the labyrinth rectangular slotted bucket compared to the solid bucket. The results were compared to empirical equations, and a high correlation was observed between them. In comparison, the Taraimovich equation produced more accurate results in control experiments, and the Damle-A and Damle-B equations produced more accurate results in experiments corresponding to labyrinth rectangular and triangular slotted buckets.</abstract><cop>Gezina</cop><pub>Water Research Commission</pub><doi>10.17159/wsa/2020.v46.i3.8656</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| source | DOAJ Directory of Open Access Journals; African Journals Online (Open Access); Sabinet African Journals Open Access Collection; EZB-FREE-00999 freely available EZB journals; Free Full-Text Journals in Chemistry |
| subjects | Dimensional analysis Dimensions Discharge Downstream effects Empirical equations Energy dissipation Experiments Flip buckets Flood discharge Hydraulic engineering Hydraulics Laboratories Mathematical analysis Researchers Scour Scouring Spillways |
| title | Experimental investigation on the effect of different slot shapes and configurations on scour dimension downstream of flip buckets |
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