Optimum location and angle of inclination of cut-off to control exit gradient and uplift pressure head under hydraulic structures

Abstract EN

The work reported in this research presents numerical investigations on the effect of cut-off inclination angle on exit gradient and uplift pressure head under hydraulic structure and determines the optimum location and angle of inclination of cut-off.

This problem is solved using the finite element method by using (ANSYS 11.0).

It is concluded that using downstream cut-off inclined towards the downstream side with Ө less than 120º is beneficial in increasing the safety factor against the piping phenomenon.

The results are evaluated graphically in non-dimensional form.