Consider the left hand side of Eqn. (19.9)
![](images/image024.gif)
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![](images/image026.gif) |
(20.6) |
The Reynolds-stress term in the thin-shear-layer equation (19.9) is
![](images/image028.gif)
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![](images/image030.gif) |
(20.7) |
The choice of F in the profile for the streamwise velocity is related to stream function and the continuity equation. The length scale can be chosen to be the half-width,
defined as
![](images/image032.gif) |
(20.8) |
Preservation of self similarity requires . The measurements show that for ![](images/image038.gif)
where d is the diameter of the orifice from where the jet is emanating .
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