Numerical simulation of the flow under sluice gates by SPH model

Sluice gates are widely used for ow control in open channels. flow under agate is complicated with a rapidly varying free surface and dynamic pressure distribution.due to this complexity, most of the studies to date are based on physical models. in thepresent study the ow under sluice gates on a at bed is modeled numerically. owingto the capabilities of sph model, in simulating rapidly varied free surface ows, thislagrangian method was applied in the present study. the sph model was further developedby introducing ixsph and an innovative method was proposed to simulate the constantinow discharge. the present model results for free surface prole, as well as velocity andpressure eld indicated good agreement with experimental and existing eulerian numericalresults. in the present work, the contraction and discharge coecients were also capturedfor dierent opening ratios and gate inclinations. this study shows the ability of thedeveloped sph model as a useful tool in designing hydraulic structures.