Experimental Study of Geometric Shape and Size of Sill Effects on the Hydraulic Performance of Sluice Gates
The present research was conducted to investigate the effect of sill geometry and sill width on the discharge coefficient and hydraulic jump characteristics. For this purpose, sills with semi-cylindrical, cylindrical, pyramidal, and rectangular cube geometries with widths of 0.075, 0.10, 0.15, and 0...
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| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/2/314 |
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| author | Rasoul Daneshfaraz Reza Norouzi Parisa Ebadzadeh Silvia Di Francesco John Patrick Abraham |
| author_facet | Rasoul Daneshfaraz Reza Norouzi Parisa Ebadzadeh Silvia Di Francesco John Patrick Abraham |
| author_sort | Rasoul Daneshfaraz |
| collection | DOAJ |
| description | The present research was conducted to investigate the effect of sill geometry and sill width on the discharge coefficient and hydraulic jump characteristics. For this purpose, sills with semi-cylindrical, cylindrical, pyramidal, and rectangular cube geometries with widths of 0.075, 0.10, 0.15, and 0.2 m were installed under a sluice gate. Results showed that increasing the sill width increased the sluice gate discharge coefficient compared to the no-sill mode. The results of placing a sill with different geometric shapes under a sluice gate indicate that using a semi-cylindrical sill increases the discharge coefficient. The ranked order of other sills, from the largest to smallest discharge coefficient, is: cylindrical, pyramidal, and rectangular cubic sills, respectively. The results show that the use of a sill increases the energy dissipation. Examining sills of different widths indicates that with increasing width, the increase in velocity and consequent decrease in the depth of the hydraulic jump causes an increase in energy loss. When employing sills of maximum width (b = 0.20 m) for pyramidal, semi-cylindrical, cylindrical, and rectangular shapes, the energy loss increased by 125, 119, 116, and 125% in section A, respectively. The semi-cylindrical sill is most effective in increasing the discharge coefficient, while the pyramidal sill is most effective for increasing energy dissipation. |
| first_indexed | 2024-03-09T11:01:31Z |
| format | Article |
| id | doaj.art-c452c9a23f7f4779952f3342bf465e66 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T11:01:31Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-c452c9a23f7f4779952f3342bf465e662023-12-01T01:17:04ZengMDPI AGWater2073-44412023-01-0115231410.3390/w15020314Experimental Study of Geometric Shape and Size of Sill Effects on the Hydraulic Performance of Sluice GatesRasoul Daneshfaraz0Reza Norouzi1Parisa Ebadzadeh2Silvia Di Francesco3John Patrick Abraham4Department of Civil Engineering, Faculty of Engineering, University of Maragheh, Maragheh 5518183111, IranDepartment of Civil Engineering, Faculty of Engineering, University of Maragheh, Maragheh 5518183111, IranDepartment of Civil Engineering, Faculty of Engineering, University of Maragheh, Maragheh 5518183111, IranDepartment of Engineering, Niccolò Cusano University, 00166 Rome, ItalySchool of Engineering, University of St. Thomas, St. Paul, MN 33901, USAThe present research was conducted to investigate the effect of sill geometry and sill width on the discharge coefficient and hydraulic jump characteristics. For this purpose, sills with semi-cylindrical, cylindrical, pyramidal, and rectangular cube geometries with widths of 0.075, 0.10, 0.15, and 0.2 m were installed under a sluice gate. Results showed that increasing the sill width increased the sluice gate discharge coefficient compared to the no-sill mode. The results of placing a sill with different geometric shapes under a sluice gate indicate that using a semi-cylindrical sill increases the discharge coefficient. The ranked order of other sills, from the largest to smallest discharge coefficient, is: cylindrical, pyramidal, and rectangular cubic sills, respectively. The results show that the use of a sill increases the energy dissipation. Examining sills of different widths indicates that with increasing width, the increase in velocity and consequent decrease in the depth of the hydraulic jump causes an increase in energy loss. When employing sills of maximum width (b = 0.20 m) for pyramidal, semi-cylindrical, cylindrical, and rectangular shapes, the energy loss increased by 125, 119, 116, and 125% in section A, respectively. The semi-cylindrical sill is most effective in increasing the discharge coefficient, while the pyramidal sill is most effective for increasing energy dissipation.https://www.mdpi.com/2073-4441/15/2/314hydraulic jumpsillsluice gatefree jump |
| spellingShingle | Rasoul Daneshfaraz Reza Norouzi Parisa Ebadzadeh Silvia Di Francesco John Patrick Abraham Experimental Study of Geometric Shape and Size of Sill Effects on the Hydraulic Performance of Sluice Gates Water hydraulic jump sill sluice gate free jump |
| title | Experimental Study of Geometric Shape and Size of Sill Effects on the Hydraulic Performance of Sluice Gates |
| title_full | Experimental Study of Geometric Shape and Size of Sill Effects on the Hydraulic Performance of Sluice Gates |
| title_fullStr | Experimental Study of Geometric Shape and Size of Sill Effects on the Hydraulic Performance of Sluice Gates |
| title_full_unstemmed | Experimental Study of Geometric Shape and Size of Sill Effects on the Hydraulic Performance of Sluice Gates |
| title_short | Experimental Study of Geometric Shape and Size of Sill Effects on the Hydraulic Performance of Sluice Gates |
| title_sort | experimental study of geometric shape and size of sill effects on the hydraulic performance of sluice gates |
| topic | hydraulic jump sill sluice gate free jump |
| url | https://www.mdpi.com/2073-4441/15/2/314 |
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