Water and Energy International

The status of natural resource wealth is a strong bench mark to decide the health and prosperity of a nation. Thus, the available natural resource wealth needs to be judiciously utilized so that it remains available for longterm sustainability. In hilly regions where land slope is steep, the flow acquires accelerated velocity as it travels down the slope and consequently becomes highly erosive in nature. In order to check erosion of soil under such slopes, the flow parameters are required to be confined to the non-erosive range by dissipating the flow energy. It was observed that in case of triangular shaped end sill, the maximum relative loss of energy occurred in 07 combinations of end sill height and discharge out of total 12 combinations tried. Similarly, semi-circular, rectangular and diagonal vertical downstream shaped end sill provided minimum energy loss in 4 cases out of 12 combinations tried for each of them. The diagonal vertical upstream shaped end sill provided maximum and minimum relative energy loss in only one case each. It was also found that the triangular shaped end sill resulted in minimum height of jump, in general, for different combinations of height and discharge. On the basis of above was, therefore, concluded that the triangular shaped end sill in general, provided the maximum relative energy loss and the least height of jump for various combinations of end sill height and discharge and thus can be designated as the best performing end sill.