Experiments on Starting Homogeneous Jets
Publication: Journal of Hydraulic Engineering
Volume 109, Issue 7
Abstract
A qualitative description of the axial motion of the starting homogeneous round water jet is presented by dividing the jet trajectory in three regions. The jet front accelerates after the exit and reaches a maximum axial velocity at the distance of nine diameters. Beyond an axial distance of twenty diameters the starting jet motion has a constant deccelerating character and an axial velocity constantly less than the steady jet velocity. In the intermediate region the motion has a transitional behavior. The starting homogeneous jet geometry is similar to the starting plume geometry.
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References
1.
Albertson, M., Dai, Y., Jenson, R., Rouse, H., “Diffusion of Submerged Jets,” Journal of the Hydraulics Division, ASCE, Vol. 76, 1950, pp. 639–664.
2.
Demetriou, J., “Turbulent Diffusion of Vertical Water Jets with Negative Buoyancy,” thesis presented to the Nat. & Tech. University of Athens, at Athens, Greece, in 1978, in partial fulfillment of the requirements for the degree of Doctor of Engineering.
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Middleton, J., “The Asymptotic Behavior of a Starting Plume,” Journal of Fluid Mechanics, Vol. 72, Part 4, 1975, pp. 753–771.
4.
Turner, J., “The Starting Plume in Neutral Surroundings,” Journal of Fluid Mechanics, Vol. 13, Part, 3, 1962, pp. 356–367.
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Information & Authors
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Published In
Journal of Hydraulic Engineering
Volume 109 • Issue 7 • July 1983
Pages: 1039 - 1044
Copyright
Copyright © 1983 ASCE.
History
Published online: Jul 1, 1983
Published in print: Jul 1983
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