The determination of mixing of pollutants in rivers is generally performed in two steps: - As a first step, the major geometric and hydraulic parameters are estimated and the characteristics of the mixing are derived from analytical solutions of the equation of turbulent dispersion. Such solutions are available only for simple geometric, hydraulic and boundary conditions and therefore the results should be considered only as first approximations. - As the second step, geometry, velocities and dispersion coefficients should be determined more accurately by laboratory measurements and in situ observations. The present paper - which is the basis of technical guidelines to be used in Hungary - discusses the first step including analytical solutions occuring most frequently in the practice, the way of estimating various dispersion coefficients and other basic data, the sensitivity of the solution, and the numerical demonstration of the simple procedure outlined by a set of examples reflecting the major features of mixing for rivers of different sizes.
|Number of pages||18|
|Publication status||Published - Jan 1 1985|
ASJC Scopus subject areas
- Water Science and Technology