Entropy and its application in computation of velocity distribution in sewers

摘要

The flow in a real sewer is three-dimensional turbulent free surface flow. The introducing of the entropy based on probability in hydraulic by Chiu gives the possibility to develop a simple equation to evaluate the velocity in the cross section. The method was applied to a study of velocity field of flow in narrow sewer. The primary flow distribution was investigated. Analysis of velocity distribution based on the probability concept has made it possible to determine the cross-sectional primary velocity distribution without having to deal with the geometrical shape of cross sections, which tend to be extremely complex in real sewers.