River safe yield with the constraint of a contracted rectangular weir for surface water supply
Aydin et al. introduced the weir velocity concept in 2011 for discharge measurement in contracted rectangular sharp-crested weirs. Gharahjeh et al. further reinforced this formula in 2015 to allow discharge to be computed using only weir velocity and crest width. These newly introduced expressions...
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| Format: | Article |
| Language: | English |
| Published: |
IWA
2016
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| Online Access: | http://ir.unimas.my/id/eprint/14765/ http://ir.unimas.my/id/eprint/14765/7/River%20safe%20yield%20with%20the%20constraint%20of%20a%20contracted%20rectangular%20weir%20for%20surface%20water%20supply%20%28abstract%29.pdf |
| Summary: | Aydin et al. introduced the weir velocity concept in 2011 for discharge measurement in contracted rectangular
sharp-crested weirs. Gharahjeh et al. further reinforced this formula in 2015 to allow discharge to be computed
using only weir velocity and crest width. These newly introduced expressions are tested and demonstrated to
determine surface water yield of Tapah River in Sarawak. Aydin and Gharahjeh’s formula is found to perform similarly
to the improved discharge coefficient developed by French in 1986, but is simpler and easier to use.
Exploring Aydin and Gharahjeh’s formula through theoretical, experimental, and field approaches, it has been
found that the formula performs well in a controlled environment. Discharge computations based on field
data were determined to have been formerly underestimated, with the reason as yet undetermined. |
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