plane jet

plane jet

[′plān ‚jet]
(hydrology)
A stream flow pattern characteristic of hyperpycnal inflow, in which the inflowing water spreads as a parabola whose width is about three times the square root of the distance downstream from the mouth.
References in periodicals archive ?
Finally, the distribution of nonbuoyant scalar concentration in a plane jet has been poorly addressed; Kotsovinos and List [5] suggest a Gaussian empirical profile while Law [12] gives a theoretical formula based on scalar flux conservation, but his mathematical expression is cumbersome and requires a function defined in the complex plane.
Experiments (e.g., Bradbury, 1965; see the review by Pope, 2000) show that the plane jet half-width [x.sup.*](z) is a linear function of z.
One recent study shows that a room may be separated by a plane jet, which prevent the transmission of pollutants from one zone to the other (Cao et al.
The main objective of this study is to quantify the interaction of breathing airflow with downward plane jet in a room with protected occupied zone ventilation (POV).
Namer and Otugen (1988) [3] experimentally studied the effects of the jet Reynolds number on a plane jet. Panchapakesan et al (1993) [4] conducted experiments on a round jet of air discharging in to quiescent atmosphere using hot- wire anemometer.
For a plane jet, if the jet issues from a slot of very large aspect ratio (i.e., width/height >40), any lateral change in the flow properties occurs in a plane normal to the slot length only; this is also referred to as a two-dimensional attached jet in some of the literature.
In previous three dimensional jet studies (elliptical jet); it has been found that elliptical jet with small aspect ratio of 2:1 can entrain 3 to 8 times more surrounding fluid than a circular or plane jet; referring to the work of Ho and Gutmark (1987) [6].
4 it can be seen that both the plane jet and the vortex pair have similar velocity distributions along the z-axis.
While the proposed vortex stretching parameter is zero for a plane jet, it is nonzero for axisymmetric mean flow and normally very small in axisymmetric boundary layers (because of large [omega]).
Namer and Otugen (1988) [2] experimentally studied the effects of the jet Reynolds number on a plane jet. Panchapakesan et al (1993) [3] conducted experiments on a round jet of air discharging in to quiescent atmosphere using hot- wire anemometer.
Also, a numerical simulation was utilized on the two dimensional solution of a vertical down ward-blowing plane jet, J.J Costa et al.