Convective-Dispersion in Perennial Streams

Mathematical models are developed to predict the spatial distribution of concentration of radioactive effluents discharged into a perennial stream. The models include continuous, instantaneous, and finite time release of effluents from point, line, plane, and parallelepiped sources. Analytical solutions are presented for both steady and nonsteady- state transports of effluents. The effect of finite channel dimensions is taken care of by the method of images. The sensitivity of the mixing process to the variations in the coefficients of transverse and vertical dispersion is illustrated by numerical examples. The practical application of each solution is demonstrated by solving specific field problems.