G227 旋回を附加したシェイプトフィルム冷却の数値解析的研究(OS7 高温・高効率発電)

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This paper describes numerical results of a shaped film cooling with swirling coolant air. In recent experimental studies, it has shown that the film-cooling effectiveness on the wall can be improved by adding a swirl to coolant air without the growth of coolant flow rate in both cases of the circular and typical shaped holes. In the latest paper, it has been revealed that one of the RANS model is useful to predict better swirling conditions and stronger swirl leads better film-cooling effectiveness on the wall in the case of circular hole. In this paper, the case of shaped hole with swirling coolant air is studied numerically. Numerical simulations are performed by employing RANS models with parameter of swirl intensity. The numerical results are also compared with experimental results already shown.
一般社団法人日本機械学会の論文
2011-06-22