Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
TsAGI Science Journal

ISSN Print: 1948-2590
ISSN Online: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2014011332
pages 3-20

DETERMINATION OF MATERIAL CATALYCITY AT HIGH TEMPERATURES IN THE VAT-104 HYPERSONIC WIND TUNNEL

Ivan Vladimirovich Egorov
Central Aerohydrodynamic Institute (TsAGI), 1, Zhukovsky Str., Zhukovsky, Moscow Region, 140180, Russian Federation
Boris Evgen'evich Zhestkov
Central Aerohydrodynamic Institute (TsAGI), 1 Zhukovsky Str., Zhukovsky, Moscow Region 140180, Russia
Vladimir Viktorovich Shvedchenko
Central Aerohydrodynamic Institute (TsAGI) , Zhukovsky, Moscow region, Russia

ABSTRACT

Nitrogen and airflows in a duct of the VAT-104 high-temperature wind tunnel are modeled by means of the numerical solution to the unsteady two-dimensional Navier−Stokes equations in wide ranges of the total pressure (1−40 kPa) and stagnation temperature (5500−8000 K). Parametric numerical studies of nonequilibrium heat transfer on the end face of a thermally insulated circular cylinder at different cylinder surface catalycity values are performed. For each flow regime, the dependence of the surface temperature on the heterogeneous recombination rate constant Kw is obtained and the derivative α = dTw /dKw is determined. The catalycity of the C−SiC thermoprotective material in nitrogen and air plasma flows at surface temperatures of Tw = 1500−1900 K is determined in the calculations and experiments based on the measured temperature differences of the reference and examined materials.


Articles with similar content:

HEAT TRANSFER TO TURBULENT GAS FLOW IN TUBES WITH SINUSOIDAL HEAT FLUX DISTRIBUTION AND VARYING GAS PROPERTIES
International Heat Transfer Conference 5, Vol.3, 1974, issue
V. L. Lel'chuk, A. G. Sorokin, K. F. Shuiskaya, O. N. Bragina
INFLUENCE OF HIGH-BYPASS-RATIO TURBOFAN JETS ON AERODYNAMIC CHARACTERISTICS OF HIGH-LIFT WING
TsAGI Science Journal, Vol.46, 2015, issue 7
Vladimir Fedorovich Tretyakov, Albert Vasilievich Petrov
AXISYMMETRIC BODY AT AN ANGLE OF ATTACK IN HYPERSONIC FLOW: HEAT PROBLEM
TsAGI Science Journal, Vol.46, 2015, issue 2
Ivan Valeryevich Ezhov, Vyacheslav Antonovich Bashkin, Ivan Vladimirovich Egorov
MODELING OF INTERACTION BETWEEN PARTICLES AND SUBSTRATE AT DETONATION SPRAYING OF COATINGS
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.18, 2014, issue 1-2
A. Ph. Ilyuschenko, Kiastas V. Buikus, A. I. Shevtsov, T. A. Ilyuschenko, G. F. Gromyko, V. M. Astashinski
CALCULATION OF THE CATHODE PROCESSES OF THE ARC PLASMA TORCHES
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.14, 2010, issue 1-2
S. Nguen-Kuok