Abstract
Experimental study is carried out to investigate the hydraulics of turbulent circular jet under surface confinement. The effect of surface confinement on the jet centerline velocity and axial velocity profiles under different surface confinements and jet exit velocities has been studied. The decay of jet centerline velocity is high under surface confinement compared to the free jet. The effect of surface confinement on the velocity profile in the vertical axis is negligible near the jet exit; however, it increases downstream of the jet exit. Flux entrainment increases linearly along the jet axis and decreases as surface confinement increases, while the kinetic energy decreases linearly along the jet axis and increases as surface confinement increases.
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