Pressure Fluctuation around Chute Blocks of SAF Stilling Basins

Geometry of the chute blocks in stilling basins plays a significant role in size and type ofthese structures. one of the most influencing factors in the design of the blocks is thefluctuating pressure which may cause fatigue on the blocks. despite investigationsconducted by many researchers, there is not enough information about the pressurefluctuation around chute blocks in compacted stilling basins such as saint anthony falls(saf) basins. in this paper, the results of a naval experimental work and measurement ofpressure fluctuations around chute blocks of saf stilling basins are reported. the resultsshow that the pressure fluctuations around the chute blocks cannot be overlooked indesigning such structures. the variation of pressure fluctuation with froude number ofincoming supercritical flow at various faces of the chute block is reported, which shows anincreasing trend of pressure fluctuation. it is also observed that the submergence ofhydraulic jump will decreasingly affect the pressure fluctuations. the trend of variationswill follow different patterns at the different faces of the block.