Investigation of Submerged Jets with an Extended Initial Laminar Region
- 17 Downloads
The method of producing laminar submerged jets using a device, whose length is comparable with the jet diameter, is described. A submerged air jet, 0.12 m in diameter, produced by means of this technique is experimentally investigated in the Reynolds number range from 2000 to 13 000. Hot-wire anemometer measurements of the flow parameters and laser visualization of the flow are performed. It is shown that the device developed makes it possible to produce submerged jets with the laminar regions as long as 5.5 jet diameters. The initial regions of such jets can be used to study the development of disturbances in submerged jets, as well as used in medicine and engineering in organizing various gasdynamic curtains which produce zones with given properties with respect to purity and composition inside another gas media.
Key wordssubmerged laminar jets hot-wire anemometry laser visualization
Unable to display preview. Download preview PDF.
- 1.G. N. Abramovich, Theory of Turbulent Jets [in Russian] (Nauka, Moscow, 1960).Google Scholar
- 7.G. Silcock, “On the Stability of Parallel Stratified Shear Flows,” Ph. D. Dissertation, Univ. Bristol (1975).Google Scholar
- 10.Lord Rayleigh, Scientific Papers (Cambridge Univ. Press, Cambridge, 2004), Vol. 3, p.575.Google Scholar
- 14.G. R. Grek, V. V. Kozlov, and Yu. A. Litvinenko, Stability of Subsonic Jet Flows and Combustion [in Russian] (Novosibirsk Univ. Press, Novosibirsk, 2013).Google Scholar
- 15.G. V. Kozlov, G. R. Grek, A. M. Sorokin, and Yu. A. Litvinenko, “Effect of the Initial Conditions in the Nozzle Exit Section on the Round Jet Structure,” Teplofiz. Aeromekh. 15 (1), 59 (2008).Google Scholar
- 17.M. V. Litvinenko, Yu. A. Litvinenko, G. V. Kozlov, and V. V. Vikhorev, “Experimental Investigation of a Submerged Round Jet with Dean Vortices,” Vestn. Novosibirsk Gos. Un-ta. Ser. Fizika 9 (2), 128 (2014).Google Scholar
- 18.V. V. Lemanov, V. I. Terekhov, K. A. Sharov, and A. A. Shumeiko, “Experimental Investigation of Submerged Jets at Low Reynolds Numbers,” Pisma Zh. Tekhn. Fiz. 39 (9), 34 (2013).Google Scholar
- 23.M. E. Deutsch, Engineering Gasdynamics [in Russian] (Gosenergoizdat, Moscow, 1961).Google Scholar