| Autor: |
Jae-Soon Roh, Tae-Kyun Kim, Young-June Choi, Youngman Cho, Jae-Hoon Bin |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Journal of Korean Society of Environmental Engineers. 33:432-438 |
| ISSN: |
1225-5025 |
| Popis: |
We need to make the standard of the best baffle shape and L/W ratio of clearwell due to insufficient disinfection in short L/W ratio and uneconomic design in long L/W ratio. The objectives of this research were to evaluate the best shape of baffle and economic L/W ratio in the all sorts of shape and size by using computational fluid dynamics. In the results of this research, the baffle with smaller number of turning flow is more beneficial for hydraulic efficiency. So, even if the same shape and structure, baffle should be designed as smaller number in turning flow. The best shape of baffle is ZigZag type (model 2) and the worst shape is Distributed types (model 4). The ZigZag type can reduce number of baffle about 67% than that of the Distributed types. In the ZigZag type, economic L/W ratio is 30~50. If L/W ratio exceed over 50, it is not economic because construction costs greatly increase and an increasing rate of T10/T is very small. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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