Abstract
This study theoretically evaluated the basin concentration time and storage coefficient with their empirical formulas available worldwide. The evaluation results were also validated in the application to major dam basins in Korea. The findings are summarized as follows. As a result of analytical analysis, the concentration time was found to be proportional to the main channel length under laminar flow conditions and to the square of it under turbulent flow conditions, but inversely proportional to the channel slope. It was also found that the storage coefficient and the concentration time are linearly but loosely related. Most empirical formulas for the concentration time concurred with the basic equation form, but just a few for the storage coefficient. Applications to major dam basins in Korea also showed that the concentration time agrees well with the result of theoretical analysis. However, the behavior of the storage coefficient varied much, basin by basin, indicating that additional factors may be needed to explain it.
| Original language | English |
|---|---|
| Pages (from-to) | 644-652 |
| Number of pages | 9 |
| Journal | Water Science and Technology: Water Supply |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2019 Mar |
Bibliographical note
Funding Information:This work is supported by the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 18AWMP-B083066-05).
Publisher Copyright:
© 2019 The Authors Water Supply.
Keywords
- Basic equation form
- Concentration time
- Empirical formula
- Storage coefficient
ASJC Scopus subject areas
- Water Science and Technology