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http://dx.doi.org/10.3741/JKWRA.2010.43.6.525

Development of Discharge Formula for Broad Crested Side Weir  

Park, Moon-Hyung (River, Coastal and Harbor Research Division, Korea Institute of Construction Technology)
Rhee, Dong-Sop (River, Coastal and Harbor Research Division, Korea Institute of Construction Technology)
Publication Information
Journal of Korea Water Resources Association / v.43, no.6, 2010 , pp. 525-531 More about this Journal
Abstract
In this study, the effects of upstream Froude number ($Fr_1$), weir height (h), weir length (L), weir width (W) and main channel width (B) on the discharge coefficient of broad crested side-weirs in a relatively wide rectangular open channel were investigated experimentally. Furthermore the relationship between discharge coefficients of sharp crested side weir and broad crested side weir was studied using the concept of De Marchi discharge coefficient. The effect of $Fr_1$ on the relationship between discharge coefficients of sharp crested side weir and broad crested side weir is decreased in wide open channel and the relative importance of other influential parameters like h/$y_1$, L/B, and W/($y_1-h$) are increased. New estimated equations for the discharge coefficients of broad crested side weir are suggested from regression analysis with the experiment data sets.
Keywords
broad crested side weir; discharge coefficient; dimensional analysis;
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