Performance Against Cavity Index and Discharge Coefficient between Broad and Sharp Crested Weirs
The purpose of this research is examining the performance of rectangular broad and sharp crested weirs in terms of cavity index and discharge coefficient. For this purpose, a computational fluid dynamics CFD code FLUENT is applied. Firstly, the code verified by applies on the experiments work of Hag...
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| Format: | Article |
| Language: | English |
| Published: |
Erbil Polytechnic University
2021-03-01
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| Series: | Polytechnic Journal |
| Subjects: | |
| Online Access: | https://polytechnic-journal.epu.edu.iq/home/vol12/iss1/13 |
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| Summary: | The purpose of this research is examining the performance of rectangular broad and sharp crested
weirs in terms of cavity index and discharge coefficient. For this purpose, a computational fluid
dynamics CFD code FLUENT is applied. Firstly, the code verified by applies on the experiments work of
Hagre et al 1994 the results show excellent agreements between CFD and Hager et al 1994. Secondly
the code applied on both broad and sharp crested weirs. The results demonstrate that broad crested
weirs have a lower discharge coefficient than sharp crested weirs, implying that broad crested weirs
have a lower ability to discharge flow than sharp crested weirs. While the cavity index of a broad
crested weir is lower than that of a sharp crested weir, the risk of cavitation is lower for a broad
crested weir. Finally, designers should use caution when deciding which type of crest to use in their |
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| ISSN: | 2707-7799 |