Numerical Analysis of Distribution of Flow and Thermal Diffusion Caused by Outfall of Cooling Water

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Abstract
ABSTRUCT In the present report, a few factors of great importance in the determination of the degree of recirculation of cooling water for power station are chosen for theoretical analysis. The problem of flow and thermal diffusion in the sea caused by outfall of warmed cooling water is considered. Numerical solution of the equation of thermal diffusion with a complete set of Eulerian equations in which the values of the eddy coefficient of diffusion and viscosity depend upon the relation to the velocity shear and vertical density gradient is presented. The Boussinesq approximation is used throughout. The mechanism of development of upwelling phenomenon is discussed from the numerical experiment taking into account of the interaction between the flow and the thermal distribution. From the result of field survey, the occurrence of the return flow in the bottom layer of the coastal region is confirmed. The numerical solutions give a good representation of all features of flow and thermal profiles.

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