Simplified Analysis of Surface Buoyant Jet

by Antonio Natalizio, Process Engr.; Hatch Assocs. Ltd., Consulting Engrs., Toronto, Ontario, Canada; formerly, Flow Systems Engr., Ontario Hydro, Toronto, Ontario, Canada,
W. Douglas Baines, (M.ASCE), Prof. of Mech. Engrg.; Univ. of Toronto, Toronto, Ontario, Canada,

Serial Information: Journal of the Hydraulics Division, 1977, Vol. 103, Issue 2, Pg. 123-132

Document Type: Journal Paper


Flow in a jet of warm water ejected normal to a uniform stream at the surface is analyzed using the equations of conservation of mass, momentum, and thermal energy. A simple solution is obtained by using the observed fact that the dilution rate is constant. The resulting jet trajectory agrees closely with experimental results. Two empirical parameters are required. One is a shape factor that depends on the width/depth ratio of the source, and the other is an entrainment factor that is a function of the source Richardson number.

Subject Headings: Jets (fluid) | Water conservation | Thermal analysis | Thermal power | Water flow | Rivers and streams | Overland flow | Energy efficiency

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