The turbulent exponential jet

A new, self‐similar, turbulent jet flow is postulated in which the global vorticity Ω is a constant following any vortex. In contrast, conventional self‐similar flows all exhibit Ω inversely proportional to the vortex age. In order for the new, postulated flow to exist, the nozzle exit speed must in...

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Bibliographische Detailangaben
Veröffentlicht in:	The Physics of fluids (1958) 1986-08, Vol.29 (8), p.2346-2347
1. Verfasser:	Breidenthal, Robert
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Fluid dynamics Fundamental areas of phenomenology (including applications) Physics Rotational flow and vorticity
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	A new, self‐similar, turbulent jet flow is postulated in which the global vorticity Ω is a constant following any vortex. In contrast, conventional self‐similar flows all exhibit Ω inversely proportional to the vortex age. In order for the new, postulated flow to exist, the nozzle exit speed must increase exponentially with time. It is shown that this circumstance may strongly inhibit the entrainment of ambient fluid into the jet.
ISSN:	0031-9171 2163-4998
DOI:	10.1063/1.865577