The results of experimental and theoretical studies into the vertical heat and suspended matter transfer in a near-bottom stratified flow are presented. To calculate the distributions of water temperature and suspended particle concentration over the entire flow depth, a mathematical model verified against in-situ measurement data is suggested. The model is constructed on the basis of the hypothesis of interaction between the shear layers (the near-bottom layer and the mixing layer). The method developed is suitable for the theoretical description of the profiles of water temperature and suspended matter concentration differing in local curvature, as well as quasistepped profiles and those containing suspended matter concentration maxima. Time variations of the profiles are calculated under nonsteady-state boundary conditions. The effects of the density flow stratification and the suspended matter activity on the vertical mass exchange in the shear layers and in the flow core are taken into account.
Department of Marine and Inland Water Physics, Department of Solid-State Physics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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