Study of Regularity about Pressure Distribution in the Bucket of Spillway Considering the Development of Boundary Layer

The steamline curve ratio in the bucket of a spillway gradually changes in the flow direction,but the wall curve ratio changes in the point of contact of the bucket suddenly.To coordinate the streamline curve ratio with the wall curve ratio,the definition of the curve ratio in the point of contact of the bucket is replenished,it is supposed that the curveratio in the vicinity of the point of contact of the bucket is a linear relation,the gravity and centrifugal force and the development of the boudary layer are taken into account,the pressure for mulas in the bucket of a spillway is developed.With the help of the testing data,the validity and reliability about the formulas is verified.