Study of Chute Blocks in Stilling Basins with Low Froude Number

Stilling basin with a low Froude number in the range of 2.5–4.5 is associated with appurtenances like chute block, end sill, etc. These auxiliary devices are provided as additional measures for improving the efficiency of the hydraulic jump in the basin. Experiments were conducted on the 2D sectional model of the Polavaram Irrigation Project at CWPRS, Pune, for testing the performance of spillway and energy dissipator. The effect of adding a chute block was compared with the performance of spillways without chute blocks. The objective of the study was to compare energy dissipation in the stilling basin of Polavaram Irrigation project, AP, for spillways provided with chute blocks and spillways without chute blocks.