蘑菇头式取水口水力特性的试验研究

he hydraulic characteristics of the mushroom shape intake are studied experimental in a flume. The Particle Image Velocimetry (PIV) is applied to measure the velocity distributions inside intake and its near area. The flow fields and distributions of turbulent energy k and Reynolds stress for different ratio of the channel velocity to intake velocity are obtained. It is found that the flow field possesses the characteristics of 3-D flow and the velocity distributions inside intake and its near area. The velocity distributions of the mushroom shape intake highly dependence on the ratio of the channel velocity to intake velocity. The maximum velocity always exists at the middle and the bottom of the intake.