Determination of Hydraulic Roughness Coefficients of Some Vegetated Species in Awka, Nigeria
| Autor: | Uchenna Peter Okoro, Chinaza Rosemary Akamonye, Chike Pius Nwachukwu, Joseph Ikenna Ubah, Kingsley Nnaemeka Ogbu, Luis Chukwuemeka Orakwe |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | ASM Science Journal. 17:1-8 |
| ISSN: | 2682-8901 1823-6782 |
| DOI: | 10.32802/asmscj.2022.1008 |
| Popis: | In this study, selected types of grasses were studied to determine their hydraulic roughness coefficient and to select the most suitable grass for erosion control. The experiments were performed in twelve trapezoidal open channels measuring 5 m x 0.12 m x 0.03 m at different flow depths (0.001m, 0.002m, 0.003m, 0.004m and 0.005m) and at varying bed slope (0.2%, 0.3%, and 0.4%). Overall, Bahama grass showed the highest Manning’s n-value due to its deep root system and creeping nature. For each slope, the degree of submergence, Reynolds number, and flow depth increases as Manning’s n decreases. As the flow depth increases, the Reynolds number increased while the drag coefficient, Cd decreases. |
| Databáze: | OpenAIRE |
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