Transport processes in hydraulic and environmental engineering [grd2тp]
| Civil Engineering |
Lectures and individual assignments
Introduction to the transport processes of passive scalars in rivers (i.e. the concentration of a chemical, suspended load, temperature of the fluid, etc.). A review of the problems and limitations in mathematical modelling of the transport processes. Application of the appropriate numerical models in solving the most important transport problems in hydraulic and environmental engineering.
The ability of students to develop and apply the numerical methods for analysis of transport processes in the environment.
Introduction. Global and partial conservation laws. Models of well-mixed systems, the state of equilibrium, the system response time. Turbulent diffusion and dispersion. Distinction between the physical and mathematical advection and diffusion. Numerical modelling of the advection and diffusion. Parameters in the 1D dispersion equation (their structure and characteristic values). Multi-dimensional dispersion models. Sediment transport in equlibrium and non-equilibrium conditions. Thermal contamination of rivers. Heat exchange at the free-surface. Modelling of the nutrient-food chain relationship. Lake and reservoir eutrophication and sedimentation.Transport processes in groundwater.
1) Cunge, J.A., Holly, F.M.,Verwey, A., Practical Aspects of Computational River Hydraulics, Pitman, London, 1980.
2) Hemond, H. and L.F. Levy, Chemical Fate and Transport in the Environment, Academic Press, 2000
3) Elder, J.W., The dispersion of marked fluid in turbulent shear flow, J.Fluid Mech., 5, 1959.
4) Fisher, H.B. Mechanics of dispersion in natural streams, J. Hydraul. Divsion, ASCE, 93, 1967.
5) Fisher et al, MIxing in Inland and Coastal Waters, Academic Press, N.Y., 1979,
6) Holly, F.M., Preismann, A., Accurate calculation of transport in two dimensions, J.Hydraul., Division, ASCE, 103, 1977.
7) Lau Y.L., Krishnappan, B.G., Modeling transverse mixing in natural streams, J. Hydraul. Divsion, ASCE, 107, 1981,
8) Taylor, G.I., The dispersion of matter in turbulent flow through a pipe, Proc. R. Soc., London Ser, A, 219, 1953.,
9) Anderson et al, Computational Fluid Mechanics and Heat Transfer, Hemisphere Publishing Corp., N.Y., 1984.
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