Effect of Channel Slope on Energy Dissipation of Flow for Single Step Broad–Crested Weirs
The effect of channel bed slope on energy dissipation of flow for single step Broad– Crested Weir was studied experimentally under free flow conditions. Five weir models were manufactured and tested , and one hundred twenty one experiments were conducted in a laboratory horizontal channel of 12m le...
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| Format: | Article |
| Language: | Arabic |
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Mustansiriyah University/College of Engineering
2012-09-01
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| Series: | Journal of Engineering and Sustainable Development |
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| Online Access: | https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1270 |
| _version_ | 1798023197494345728 |
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| author | Sahad Salim Elyass |
| author_facet | Sahad Salim Elyass |
| author_sort | Sahad Salim Elyass |
| collection | DOAJ |
| description |
The effect of channel bed slope on energy dissipation of flow for single step Broad– Crested Weir was studied experimentally under free flow conditions. Five weir models were manufactured and tested , and one hundred twenty one experiments were conducted in a laboratory horizontal channel of 12m length, 0.5m width and 0.45m depth for a wide range of discharge. The experimental results showed that water surface profiles were smooth and continuous and had a descending trend from the point of measurement taking the shape of the weir with a steep drop near the downstream face of the weir. It was found that for the same ratio (P/P1) the channel slope effect (S) was inversely proportional on the energy dissipation. In addition, the effect of (He/P) did not appear when (P/P1 =1&1.2), while in the other weirs appeared. An empirical non-dimensional relation was obtained to determine the energy dissipation ratio in terms (He/p), (P/P1), (S) and (Fr2) with high correlation coefficient.
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| first_indexed | 2024-04-11T17:42:21Z |
| format | Article |
| id | doaj.art-76160b5b8038492f8adde6a0d8745c28 |
| institution | Directory Open Access Journal |
| issn | 2520-0917 2520-0925 |
| language | Arabic |
| last_indexed | 2024-04-11T17:42:21Z |
| publishDate | 2012-09-01 |
| publisher | Mustansiriyah University/College of Engineering |
| record_format | Article |
| series | Journal of Engineering and Sustainable Development |
| spelling | doaj.art-76160b5b8038492f8adde6a0d8745c282022-12-22T04:11:28ZaraMustansiriyah University/College of EngineeringJournal of Engineering and Sustainable Development2520-09172520-09252012-09-01163Effect of Channel Slope on Energy Dissipation of Flow for Single Step Broad–Crested WeirsSahad Salim Elyass0Technical Engineering College, Mosul, Iraq The effect of channel bed slope on energy dissipation of flow for single step Broad– Crested Weir was studied experimentally under free flow conditions. Five weir models were manufactured and tested , and one hundred twenty one experiments were conducted in a laboratory horizontal channel of 12m length, 0.5m width and 0.45m depth for a wide range of discharge. The experimental results showed that water surface profiles were smooth and continuous and had a descending trend from the point of measurement taking the shape of the weir with a steep drop near the downstream face of the weir. It was found that for the same ratio (P/P1) the channel slope effect (S) was inversely proportional on the energy dissipation. In addition, the effect of (He/P) did not appear when (P/P1 =1&1.2), while in the other weirs appeared. An empirical non-dimensional relation was obtained to determine the energy dissipation ratio in terms (He/p), (P/P1), (S) and (Fr2) with high correlation coefficient. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1270energy dissipationBroad–Crested weirschannel slope |
| spellingShingle | Sahad Salim Elyass Effect of Channel Slope on Energy Dissipation of Flow for Single Step Broad–Crested Weirs Journal of Engineering and Sustainable Development energy dissipation Broad–Crested weirs channel slope |
| title | Effect of Channel Slope on Energy Dissipation of Flow for Single Step Broad–Crested Weirs |
| title_full | Effect of Channel Slope on Energy Dissipation of Flow for Single Step Broad–Crested Weirs |
| title_fullStr | Effect of Channel Slope on Energy Dissipation of Flow for Single Step Broad–Crested Weirs |
| title_full_unstemmed | Effect of Channel Slope on Energy Dissipation of Flow for Single Step Broad–Crested Weirs |
| title_short | Effect of Channel Slope on Energy Dissipation of Flow for Single Step Broad–Crested Weirs |
| title_sort | effect of channel slope on energy dissipation of flow for single step broad crested weirs |
| topic | energy dissipation Broad–Crested weirs channel slope |
| url | https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1270 |
| work_keys_str_mv | AT sahadsalimelyass effectofchannelslopeonenergydissipationofflowforsinglestepbroadcrestedweirs |