Turbulent Jets with Reversible Buoyancy

by Subhash C. Jain, (A.M.ASCE), Asst. Prof.; Div. of Energy Engrg., and Research Engr., Inst. of Hydr. Research, The Univ. of Iowa, Iowa City, Iowa,
Jose M. Pena, Research Asst.; Inst. of Hydr. Research, The Univ. of Iowa, Iowa City, Iowa,

Serial Information: Journal of the Hydraulics Division, 1975, Vol. 101, Issue 9, Pg. 1221-1233

Document Type: Journal Paper


The results of the numerical analysis of turbulent warm water jets discharging into quiescent water at freezing temperature are summarized. Due to the peculiar variation of the density of water at low water temperatures, the behavior of a warm water jet is different from that of a buoyant jet in which the density can be assumed to be a linear function of the temperature. The problem is analyzed by employing the integral approach and assuming similarity conditions for velocity and temperature profiles. The nonlinear variation of density with temperature is included in the analysis. Results for the jet trajectory, width, and dilution are presented in graphical form. These solutions can be used to predict the behavior of warm submerged jets discharging into lakes during winter season when the ambient temperature of the lake is near the freezing mark.

Subject Headings: Temperature effects | Water discharge | Thermal analysis | Turbulent flow | Jets (fluid) | Water temperature | Freezing | Density currents

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