B-3 フィルム冷却を伴う複合型インピンジ冷却構造の熱流体特性に関する研究 : CFDによる予測(翼冷却技術,一般講演)

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This paper deals with numerical investigations on the film effectiveness and heat transfer coefficients for two transpiration cooling systems, both of which integrate impingement cooling and pin fin cooling devices into one body. The proposed cooling systems aim at enlargement of the effective heat transfer area as well as enhancement of the internal heat transfer. One of the purposes of the present study is to clarify any reasons for the experimentally observed difference in cooling efficiency for two different internal cooling configurations. The present study then calculates film cooling effectiveness and heat transfer coefficient on film surface, in comparison with the relevant measurements. Numerical simulation is executed with ICEM-CFD mesh builder and CFX10.0 solver of ANSYS CO. Flow structure inside the cooling system visualized by CFD is useful to find out a relationship between the internal flow field and film effectiveness and/or heat transfer.
公益社団法人日本ガスタービン学会の論文
2007-09-01