Analysis of Hydraulic Characteristics of Broad Crested Weir with Semicircle Control Section
This study deals with evaluation ofthe hydraulic characteristics such as critical depth, and discharge coefficient of a broad crested weir with semi-circle control section extend across the full width of a laboratory channel. Provided the occurrence of critical Flow at the control section, the use o...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2016-01-01
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| Series: | Engineering and Technology Journal |
| Subjects: | |
| Online Access: | https://etj.uotechnology.edu.iq/article_112550_403b6da6ddba45c22170de6914f6e89a.pdf |
| _version_ | 1827358820075044864 |
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| author | Thabet mohammed abdulatif |
| author_facet | Thabet mohammed abdulatif |
| author_sort | Thabet mohammed abdulatif |
| collection | DOAJ |
| description | This study deals with evaluation ofthe hydraulic characteristics such as critical depth, and discharge coefficient of a broad crested weir with semi-circle control section extend across the full width of a laboratory channel. Provided the occurrence of critical Flow at the control section, the use of solver function in Microsoft Excel replaces the traditional methods such as trial and error method and chart to solve governing equations represent the hydraulic condition at the control section. The use of solver function provides accurate solution of critical depthsfor different flowrates ranges, knowing these depths valuesmake it easy for computation of theoretical discharges. Data obtained from laboratory experiments provide information on head – discharge relationship examined under free flow condition. The (HEC-RAS)software version 4.1 was developed with steady flow state yields, water surface profiles, and plot cross sections and computational of rating curve. The results achieved are compared with the observations show acceptable agreement between these two results and the flow remains critical, not supercritical along the weir crest. The study shows that theoretical discharge equation is a function of shape factor, the laboratory discharge measurement varies with the square head upstream weir crest, and the values of the discharge coefficient are not quite constant with the range of modular limit, but increases slightly with increasing discharge. |
| first_indexed | 2024-03-08T06:16:42Z |
| format | Article |
| id | doaj.art-a7702ea3d4b74f5abcb44dcb5bea7dd3 |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T06:16:42Z |
| publishDate | 2016-01-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-a7702ea3d4b74f5abcb44dcb5bea7dd32024-02-04T17:27:21ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582016-01-01341A12313510.30684/etj.34.1A.11112550Analysis of Hydraulic Characteristics of Broad Crested Weir with Semicircle Control SectionThabet mohammed abdulatifThis study deals with evaluation ofthe hydraulic characteristics such as critical depth, and discharge coefficient of a broad crested weir with semi-circle control section extend across the full width of a laboratory channel. Provided the occurrence of critical Flow at the control section, the use of solver function in Microsoft Excel replaces the traditional methods such as trial and error method and chart to solve governing equations represent the hydraulic condition at the control section. The use of solver function provides accurate solution of critical depthsfor different flowrates ranges, knowing these depths valuesmake it easy for computation of theoretical discharges. Data obtained from laboratory experiments provide information on head – discharge relationship examined under free flow condition. The (HEC-RAS)software version 4.1 was developed with steady flow state yields, water surface profiles, and plot cross sections and computational of rating curve. The results achieved are compared with the observations show acceptable agreement between these two results and the flow remains critical, not supercritical along the weir crest. The study shows that theoretical discharge equation is a function of shape factor, the laboratory discharge measurement varies with the square head upstream weir crest, and the values of the discharge coefficient are not quite constant with the range of modular limit, but increases slightly with increasing discharge.https://etj.uotechnology.edu.iq/article_112550_403b6da6ddba45c22170de6914f6e89a.pdfcontrol sectioncritical depthhecrasrating curvesolver functiondischarge coefficient |
| spellingShingle | Thabet mohammed abdulatif Analysis of Hydraulic Characteristics of Broad Crested Weir with Semicircle Control Section Engineering and Technology Journal control section critical depth hec ras rating curve solver function discharge coefficient |
| title | Analysis of Hydraulic Characteristics of Broad Crested Weir with Semicircle Control Section |
| title_full | Analysis of Hydraulic Characteristics of Broad Crested Weir with Semicircle Control Section |
| title_fullStr | Analysis of Hydraulic Characteristics of Broad Crested Weir with Semicircle Control Section |
| title_full_unstemmed | Analysis of Hydraulic Characteristics of Broad Crested Weir with Semicircle Control Section |
| title_short | Analysis of Hydraulic Characteristics of Broad Crested Weir with Semicircle Control Section |
| title_sort | analysis of hydraulic characteristics of broad crested weir with semicircle control section |
| topic | control section critical depth hec ras rating curve solver function discharge coefficient |
| url | https://etj.uotechnology.edu.iq/article_112550_403b6da6ddba45c22170de6914f6e89a.pdf |
| work_keys_str_mv | AT thabetmohammedabdulatif analysisofhydrauliccharacteristicsofbroadcrestedweirwithsemicirclecontrolsection |