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TsAGI Science Journal

ISSN Печать: 1948-2590
ISSN Онлайн: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2014011330
pages 61-87

INVESTIGATION OF EFFUSION/FILM COOLING EFFICIENCY FOR SHARP CONE HEAT FLUX CONTROL AT HIGH SUPERSONIC SPEEDS

Pavel Vladimirovich Chuvakhov
Central Aerohydromynamic Institute, 1 Zhukovskogo str., Zhukovsky, Moscos reg., 140180, Russia; and Moscow Institute of Physics and Technology (State University), 9 Institutskiy per., Dolgoprudny, Moscow reg., 141700, Russia

Краткое описание

The results of a numerical investigation of heat flux control over a sharp cone surface by means of blowing cooling gas (air) through a continuous circular slot at the cone surface are presented. Different ways of implementing film cooling are addressed, namely, coolant injection in the downstream and upstream directions and through a microporous surface element at a right angle to the surface. The flow structure is analyzed in the blowing region. The local cooling effect is found to rise significantly as the mass flow rate of the coolant is increased. It is to be noted that an optimal state between cooling and total mechanical energy losses due to the coolant/external flow interaction needs to be found.


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