This research paper investigates about the performance of stilling basin models with different geometry of intermediate sill having height equivalent to the diameter of pipe outlet. The experimental study was carried out for three Froude numbers namely 3.85, 2.85 and 1.85 for non-circular pipe outlet. Performance index (PI) has been used to evaluate the performance of stilling basin models test...

The violent fluctuation of hydrodynamic pressure in stilling basins is an important factor threatening the safety bottom plates basins, and plays role safe operation basins. In order to deeply understand fluctuating characteristics signal a basin plate processed by Hilbert-Huang transform method through hydraulic model test. this paper, three decomposition methods are used decompose pulsating s...

Intense pressure and velocity oscillations, as well extensive air entrainment, make the investigation of hydraulic leap created in stilling basins very difficult. Its intricacy, coupled with real-world need for to dissipate energy, puts physical modelling front center. Despite basins' essential role engineering, bibliographic research has often focused primarily on more familiar case classical ...

An experimental investigation on effect of end sill on the performance of stilling basin models for a non circular pipe outlet has been presented in this research paper. New physical models for non circular pipe outlet stilling basin have been developed in the laboratory. These newly models were tested in the laboratory for three Froude numbers namely Fr = 1.85, 2.85 and 3.85. The new models ar...

Abstract The USBR VI stilling basin is one of the oldest basins designed to dissipate energy at outlet pipes. In this study, effect two parameters including Froude number (Fr) inlet flow and ratio width equivalent depth ( W / D ) on characteristics mean turbulent inside were investigated, numerically. Reynolds Averaged Navier–Stokes (RANS) equations solved with Re-Normalization Group (RNG) k-ε ...

In the present study, the six legged concrete (SLC) elements are placed at the bed of a flume downstream of a chute in different layouts, densities and number of longitudinal rows of SLC elements. Each test was run for different flow conditions (Froude numbers ranged 5.3 to 8.1). During each test, the water surface profile, the roller length and the jump length measured.  Applying the experimen...