Open Access

ARTICLE

NUMERICAL INVESTIGATION OF FILM COOLING WITH CHEMICAL HEAT SINK

Keyong Cheng^a,b,*, Chunzi Zhang^c, Wei Chen^a,b, Shiqiang Liang^a,†, Yongxian Guo^a,d, Xiulan Huai^a

a Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China
b Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
c Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada
d School of Mechano-electronic Engineering, Xidian University, Xi’an, Shaanxi, 710071, China

Currently in Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China
† Corresponding author. Email:

Frontiers in Heat and Mass Transfer 2012, 3(3), 1-6. https://doi.org/10.5098/hmt.v3.3.3003

Abstract

A film cooling method with chemical heat sink for gas turbine blades is proposed. In this method, an endothermic reaction of cooling stream occurs due to the heating from the mainstream, which leads to an improvement of film cooling effectiveness. The proposed method at different blowing ratios are computed and compared with the conventional one. The simulation result shows that due to the exsitence of the chemical heat sink the proposed method can enhance film cooling effectiveness not only in the streamwise direction, but also in the spanwise direction.

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Keywords

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