ABSTRACT
While solving practical problems concerning thermal pollution spreading in rivers, we very often deal with limited measuring data. At the same time the main target of such studies is usually the assessment of possible threats to the environment. Therefore the use of numerical models to simulate various scenarios of pollution spreading is a useful tool for such studies. In the present paper a twodimensional numerical model developed by authors (called RivMix model) has been used to simulate the temperature distribution, after a continuous release of warm water into a river. Heat transport in the model is represented by the depth-averaged advection-diffusion equation with the included off-diagonal elements in the dispersion tensor. The simulations have been made for a few different study areas with complicated real channel geometries. A number of warm water release scenarios have been considered as well. Limitations and problems encountered have been discussed in the paper.
