Heat transfer characteristics of the rib angle in the pin-fin cooling combined with perforated blockage

Yong Jin Kim, Seok Min Choi, Hee Seung Park, Su Won Kim, Eui Yeop Jung, Jung Shin Park, Hyung Hee Cho

Research output: Contribution to journalArticle


To cool the internal passage of a trailing edge, a cooling method that uses a pin-fin array, perforated blockage, and an angled rib is applied. This study investigated the effect of an angled rib in a pin-fin array combined with perforated blockage. A numerical analysis was conducted to analyze the flow and heat transfer characteristics of each shape by changing the rib angle to -45°, 0°, and 45°. The Reynolds number based on the pin diameter was fixed at 5,000. The influence of the flow distribution on the channel confirmed the heat transfer and pressure characteristics. As a result, the flow distribution in the channel was different depending on the rib angle. In particular, when the perforated blockage was combined with the pin-fin array, the uniformity of the heat transfer was improved.

Original languageEnglish
Pages (from-to)453-461
Number of pages9
JournalTransactions of the Korean Society of Mechanical Engineers, B
Issue number7
Publication statusPublished - 2019 Jan 1


All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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