METHOD FOR ANALYZING POLLUTANT BEHAVIOR THROUGH PREDICTION OF THE LONGITUDINAL DISPERSION COEFFICIENT BASED ON THE VELOCITY PROFILE OF THE PRIMARY FLOW IN A RIVER

摘要

The present invention relates to a method for analyzing the behavior of pollutants through the calculation of the longitudinal dispersion coefficient combined with the main flow velocity distribution of the stream, (a) river information including the flow velocity and depth, river width and lateral dispersion coefficient of the stream to be analyzed; Investigating and storing; (b) selecting a lateral distribution equation of the main flow, which can simulate the lateral distribution of the main flow which varies according to the characteristics of the river, and is verified by the field flow data; (c) obtaining a longitudinal dispersion coefficient using a triple integration equation for estimating the lateral distribution and the longitudinal dispersion coefficient of the main stream selected in step (b); and (d) the flow velocity of the stream stored in the step (a); Comprising the numerical dispersion coefficient obtained in the step (c) as input data to construct a numerical model, which is the concentration of contaminants in the stream, to quantitatively grasp the influence of the lateral distribution of the main stream on the species dispersion. In addition, by more accurately estimating the species dispersion coefficient, which is an important parameter in the one-dimensional pollution diffusion analysis, it can be usefully used to analyze the behavior of pollutants, providing basic information on the operation of water intake stations and the development of water quality warning system. It is effective.