The Influence of the Angle of Inclination of Single-Row Oval-Trench Dimples in the Stabilized Hydrodynamic Section of a Narrow Channel on the Anomalous Intensification of the Separated Turbulent Flow

摘要

The slope of an oval-trench dimple in the corridor package on the stabilized hydrodynamic section of the narrow channel has a dramatic effect on the anomalous intensification of the separated and vortex flows in the dimple, leading to a three- to fourfold decrease in the relative negative friction in the range of angles from 40 degrees to 60 degrees, an increase in the maximum velocity of separated and secondary flow up to 0.8 and 1.18 in relation to the average mass flow rate in the channel.