The present study was conducted to evaluate the total cooling effectiveness in combined full-coverage film cooling and impingement jet using an infrared thermographic technique. The effect of film cooling hole angle, blowing ratio, and height to diameter ratio between the film cooling and impingement jet plates was discussed. The total cooling effectiveness increased as impingement jet cooling was added. The angled film cooling holes had approximately 4.6% higher total cooling effectiveness than the normal film cooling holes. The total cooling effectiveness was almost constant regardless of height to diameter ratio, but enhanced as the blowing ratio was increased.
Bibliographical noteFunding Information:
This work was supported by the human resources development program (No.20144030200560) of the Korean Institute of Energy Technology Evaluation and Planning (KETEP). The program is funded by the Korean government Ministry of Trade, Industry, and Energy.
© 2017 Taylor & Francis.
All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Electrical and Electronic Engineering