Effects of Dam Gate Geometry on Pressure Variation Aided by Map Presentation
The dam vertical lift gate is one of the most important operational parts that regulate the high head water flow to power plants as well as satisfying the water needs for projects and areas downstream of the dam. Due to the high water levels in the dam reservoir, the gates are subjected to many hydr...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Erbil Polytechnic University
2020-06-01
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| Series: | Polytechnic |
| Subjects: | |
| Online Access: | https://polytechnic-journal.epu.edu.iq/home/vol10/iss2/8 |
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| Summary: | The dam vertical lift gate is one of the most important operational parts that regulate the high head
water flow to power plants as well as satisfying the water needs for projects and areas downstream
of the dam. Due to the high water levels in the dam reservoir, the gates are subjected to many
hydrostatic and dynamic pressures that affect their performance and stability. Hence, it became
necessary to study all parameters that may cause excessive pressures which may lead to reduce the
gate performance efficiency or even cause failure. In the current study, the pressure distribution along
the bottom surface of various gate lip shapes has been measured and presented as contour maps using
Surfer software. The pressure fluctuation was observed to indicate the intensity of flow separation and
reattachment which, in turn, causes a vibration that may threaten the stability of the gate or impede
its proper functioning. The pressures in this study are expressed as a dimensional coefficient through
the integration of pressure measurements at 8 points distributed over the bottom gate surface. The
high intensity of pressure attachment indicates the critical condition for hydraulic design. |
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| ISSN: | 2707-7799 |