Arrangement effects of inclined teardrop-shaped dimples on film cooling performance of dimpled cutback surface at airfoil trailing edge
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- 作者：Akira Murata<sup>asup><sup> ; sup><sup>murata@cc.tuat.ac.jpsup> ; Kohta Yano<sup>asup> ; Masaki Hanai<sup>asup> ; Hiroshi Saito<sup>bsup> ; Kaoru Iwamoto<sup>asup>
- 关键词：Heat transfer enhancement ; Dimples ; Film cooling ; Gas turbine ; Cutback surface
- 刊名：International Journal of Heat and Mass Transfer
- 出版年：2017
- 出版时间：April 2017
- 年：2017
- 卷：107
- 期：Complete
- 页码：761-770
- 全文大小：4244 K
- 卷排序：107
文摘
Film cooling effectiveness was insensitive to dimpled-surface geometry. Nusselt number was much more sensitive to dimpled-surface geometry. Overall film cooling performance was the highest for 30 deg in-line arrangement. PTV results confirmed suppression of flow separation for 30 deg in-line arrangement.