Numerical investigations of downpull forces for leaf gate in high dams

Abstract EN

Determination of hydrodynamic forces is a serious problem on the design of leaf gates in high head dams.

hence, this study aims to estimate and study the downpull coefficients for leaf gate in high dams by the solution of two and three dimensional navier-stokes equations using standard k-ε turbulence model.

the equations were solved by ANSYS FLUENT V14 software using finite volume techniques.

the simulation revealed the effects of many geometric and hydraulic parameters on downpull coefficient.

moreover, the results appeared that considering the presence of gate well in the model caused slight effects on the bottom downpull coefficients considering two-dimensional flow state.

while, in the state of a three-dimensional model, it was noted that there were some differences for the bottom downpull coefficients values between the cases of the gate with and without well.

finally, the numerical model was also used to determine the general characteristics of pressure contours, velocity vectors, and streamlines velocity plots for the flow field profile.

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