Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 29, 2018 - November 30, 2018
This paper describes attempts to optimize flow control devices (Dimple), which was invented by one of the authors for achieving better film cooling performance of gas turbine cooling holes. In the past study, it was confirmed that film cooling performance can be improved by adding flow control devices (DFCD) which is a three-dimensional protrusion shape. However, it was also identified that DFCD did not perform well at high density ratio and low blowing ratio condition, i.e., DR=1.53 and BR=0.5. Therefore, in this research, we devised Dimple type device which is three dimensional dimple shape newly, and worked on Dimple shape optimization under high density ratio and low blowing ratio condition.
