Effect of turbulent intensity on efficiency of the gas screen in the Laval nozzle

Abstract

The authors have experimentally investigated the effect of increased turbulence of the external flow on the efficiency of the gas screen in axisymmetric supersonic nozzles. It is shown that, when turbulence of the arriving flow increases both in the subsonic, and supersonic parts of the Laval nozzle, efficiency drastically reduces. For instance, turbulization of the flow, with 15% turbulence degree, worsens protective properties of the screen 2-3 times. Using the asymptotic theory of gas screens, empirical data were generalized.

Original language	English
Pages (from-to)	602-607
Number of pages	6
Journal	Teplofizika Vysokikh Temperatur
Volume	33
Issue number	4
Publication status	Published - 1 Jul 1995
Externally published	Yes

ASJC Scopus subject areas

Fluid Flow and Transfer Processes

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title = "Effect of turbulent intensity on efficiency of the gas screen in the Laval nozzle",

abstract = "The authors have experimentally investigated the effect of increased turbulence of the external flow on the efficiency of the gas screen in axisymmetric supersonic nozzles. It is shown that, when turbulence of the arriving flow increases both in the subsonic, and supersonic parts of the Laval nozzle, efficiency drastically reduces. For instance, turbulization of the flow, with 15% turbulence degree, worsens protective properties of the screen 2-3 times. Using the asymptotic theory of gas screens, empirical data were generalized.",

author = "Lebedev, {V. P.} and Lemanov, {V. V.} and Misyura, {S. Ya} and Terekhov, {V. I.}",

year = "1995",

month = jul,

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language = "English",

volume = "33",

pages = "602--607",

journal = "Teplofizika Vysokikh Temperatur",

issn = "0040-3644",

publisher = "Izdatel'stvo Nauka",

number = "4",

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T1 - Effect of turbulent intensity on efficiency of the gas screen in the Laval nozzle

AU - Lebedev, V. P.

AU - Lemanov, V. V.

AU - Misyura, S. Ya

AU - Terekhov, V. I.

PY - 1995/7/1

Y1 - 1995/7/1

N2 - The authors have experimentally investigated the effect of increased turbulence of the external flow on the efficiency of the gas screen in axisymmetric supersonic nozzles. It is shown that, when turbulence of the arriving flow increases both in the subsonic, and supersonic parts of the Laval nozzle, efficiency drastically reduces. For instance, turbulization of the flow, with 15% turbulence degree, worsens protective properties of the screen 2-3 times. Using the asymptotic theory of gas screens, empirical data were generalized.

AB - The authors have experimentally investigated the effect of increased turbulence of the external flow on the efficiency of the gas screen in axisymmetric supersonic nozzles. It is shown that, when turbulence of the arriving flow increases both in the subsonic, and supersonic parts of the Laval nozzle, efficiency drastically reduces. For instance, turbulization of the flow, with 15% turbulence degree, worsens protective properties of the screen 2-3 times. Using the asymptotic theory of gas screens, empirical data were generalized.

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EP - 607

JO - Teplofizika Vysokikh Temperatur

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SN - 0040-3644

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