He added, "Post-JCPOA times have been totally different for country's defense industry and the authorities would feel these changes the best and in the most concrete level; now, Iran is in a place to close the gap with the world in terms of shortages in weapons and military industry; we have taken huge leap forward by plane jet
turbo engines and have been piling technical know-how on manufacturing aircrafts.
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)  experimentally studied the effects of the jet Reynolds number on a plane jet.
It can been seen that all the twin jet combinations shows an increase in the jet exit velocity with respect to the corresponding plane jet values (Table 2)
For a plane jet, if the jet issues from a slot of very large aspect ratio (i.
The earliest known work on the attached plane jet was carried out by Forthmann (1934), which was described and quoted by Sigalla (1958), Schwarz and Cosart (1961), Reddy Gorla and Jeng (1971), Bajura and Catalano (1975), Rajaratnam (1976), Awbi (1991), and Imao et al.
By comparing with the velocity distribution along z-axis of plane jet
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)  experimentally studied the effects of the jet Reynolds number on a plane jet
Also, a numerical simulation was utilized on the two dimensional solution of a vertical down ward-blowing plane jet
Meslem, Nastase and Martin 2006 ; Gaskin and Wood 2001 ; Hua Ming and Tang 2001 ) and plane jets