Effect of impingement jet on the full-coverage film cooling system with double layered wall

Eui Yeop Jung, Sang Hyun Oh, Dong Hyun Lee, Kyung Min Kim, Hyung Hee Cho

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)544-562
Number of pages19
JournalExperimental Heat Transfer
Issue number6
Publication statusPublished - 2017 Nov 2

Bibliographical note

Funding 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.

Publisher Copyright:
© 2017 Taylor & Francis.

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Instrumentation
  • Electrical and Electronic Engineering


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