pattern shrinkage
2.Abstract: Through a series of hydraulic model tests for researching actual power tunnel operation,a conclusion is reached that in order to get a better flow pattern the profile of the wate-carrying structure should be adapted to the variation of water streamline shrinkage,flow velocity and pressure intensity.The configuration and dimension of the kinetic energy dissipator should be selected carefully to make the water tunnel safe and reliable at different levels of diversion dischage.
