Transient Hydrothermal Analysis of Small Lakes

by Lawrence A. Loziuk, Engrg. Analyst; Sargent & Lundy Engrs., Chicago, IL,
James C. Anderson, (M.ASCE), Sr. Engrg. Analyst; Sargent & Lundy Engrs., Chicago, IL,
Ted Belytschko, (A.M.ASCE), Asst. Prof. of Struct. Mech.; Univ. of Illinois at Chicago Circle, Chicago, IL,

Serial Information: Journal of the Power Division, 1973, Vol. 99, Issue 2, Pg. 349-364

Document Type: Journal Paper


The element method is used to predict the transient, horizontal temperature distribution resulting from the discharge of a heated effluent into a body of water. The methods of heat transfer which are considered include the heat exchange at the air water interface, advection, and diffusion. The two-dimensional, transient solution to the governing field equation is approximated by applying the Galerkin comparison of the numerical solution with the exact solution for a one-dimensional example is also applied to a cooling pond and the results are compared with the measured field data which were taken over a period of 4 days. The method is particularly well suited for evaluating the performance of cooling ponds for purposes of design; however, the method is general and may be applied to rivers and lakes.

Subject Headings: Transient response | Lakes | Temperature distribution | Water discharge | Heat transfer | Cooling (wastewater treatment) | Temperature effects | Ponds

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