Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Heat Transfer Research
Facteur d'impact: 0.404 Facteur d'impact sur 5 ans: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v31.i6-8.70
pages 419-427

High-Turbulent Gas Screen in a Supersonic Nozzle

V. P. Lebedev
S. S. Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
V. V. Lemanov
Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Viktor I. Terekhov
Kutateladze Institute of Thermophysics, Laboratory of Thermal and Gas Dynamics, Russian Academy of Sciences, Siberian Branch, 630090,1, Acad. Lavrent'ev Avenue, Novosibirsk, Russia; Novosibirsk State Technical University, K. Markx av., 20, Novosibirsk, 630073, Russia


An effect of initial turbulence of the flow on characteristics of a gas screen in the Laval nozzle is studied experimentally. The effect of flow acceleration on turbulence behavior is considered, the distribution of turbulence is compared with the theory of rapid transformation. The distribution of static pressure, adiabatic temperature of a wall, coefficient of recovery, and the parameter of gas screen efficiency along the nozzle length is measured. An integral method is suggested for calculation of the efficiency of screen cooling on the calculated flow modes in the nozzle. The method allows for a longitudinal pressure gradient, compressibility, nonisothermicity and degree of flow turbulence.