Energy Dissipation in Gradually Expanding Channel by Free Overfall Flow through Weir
| Autor: | Yuan-Ya Liao, 廖苑雅 |
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| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 This study intends to derive the theory of energy dissipation in gradually expanding channel and to investigate its characteristic parameters including the conjugate depth ratio, the relative energy loss, and the energy dissipation efficiency of hydraulic jump. The study has proved that the theoretical formula of the energy dissipation efficiency of hydraulic jump, which is affected by the change of height, width, and discharge of weir. The sensitive analysis shows the correlation between the hydraulic parameters. The analysis and comparison of gradually expanding channel with different forms of cross-section channels explore the hydraulic jump, the efficiency of energy dissipation, and the characteristics of hydraulic jump upon which a better design is proposed. The results showed the efficient of energy dissipation of the gradually expanding channel is better as compared with that of the prismatic channel. The experiments indicated of the relationship between the side-pressure correction factor and pre-jump and post-jump cross-sectional width ratio, a highly sensitively and positive correlation. Moreover, the theoretical analysis showed the average relation error of the energy dissipation efficiency of the hydraulic jump is 5.53 percent and this parameter is very beneficial to the design profession of weirs. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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