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传热学
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ISSN 打印: 1064-2285
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传热学

DOI: 10.1615/HeatTransRes.v37.i2.30
pages 113-122

Simulation of the System Stabilizing Film Cooling of Turbine Blades Based on Blank Damping Cavities

N. N. Kovalnogov
Ul'yanovsk State Technical Universtiy, Ul'yanovsk, Russia
D. A. Buinov
Ul'yanovsk State Technical Universtiy, Ul'yanovsk, Russia

ABSTRACT

A mathematical model of film cooling of turbine blades under the conditions of the formation of a film on a punched surface having blank damping cavities is suggested. Based on numerical investigation with the use of the proposed model, the possibility of a substantial increase (under the analyzed conditions ensuring a decrease in the adiabatic wall temperature by 200 K) in the efficiency of film cooling due to partial laminarization of a turbulent boundary layer on the punched surface has been revealed.


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