European Journal of Applied Engineering and Scientific Research
Abstract
Author(s): Mehdi Nezhad Naderi, Ehsanallah Hadipour
The bottom outlets are used to transfer water from the lake to the dam downstream. Performance analysis includes
a discharge conduit, and outlet valve has a special sensitivity to them. In this Study is evaluated the pressure
distribution around the outlet channels and the calculating of hydrodynamic forces was carried out. Numerical
Solution carried out by Fluent software that is based on finite volume method. Then physical model results were
compared with results of numerical models. Velocity and pressure values obtained from the numerical values of the
pressure on the valve per valve opening of 30%,50% and 80%. The results show that the pressure values obtained
from the numerical model and previous studies follow a similar pattern. For greater amount of percentage of gate
opening the pressure exerted on the bottom and top of the valve opening is reduced. According to the results of
previous studies and numerical model, always difference of pressure exerted on the bottom and top of the valve is
caused down pull force.
