Numerical simulation on flow and heat transfer of elliptical pin-fins in cooling channel

Ding Yuan Deng, Hang Shan Gao, Kua Hai Yu, Zhu Feng Yue

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Numerical simulation was conducted to investigate the flow and heat transfer performance of elliptical pin-fin arrays in turbine blade cooling channel. Then, the impacts of array spacing, angle of attack, ratio of long axis and short axis on flow and heat transfer in pin-fins channel were obtained. The result indicates that, when the angle of attack is 0°, the pressure loss coefficient and average Nusselt number of elliptical pin-fins channel is about 51.7% and 83.75%, respectively, of the same fin section-area and arrays circular pin-fins channel; when the ratio of long axis and short axis is 5/1.8, the pressure loss coefficient is only 28.1%~35.5% of circular pin-fins channel (ratio of long axis and short axis is 3/3), and average Nusselt number is 71.1%~75.06% of circular pin-fins channel.

Original languageEnglish
Pages (from-to)1545-1552
Number of pages8
JournalHangkong Dongli Xuebao/Journal of Aerospace Power
Volume25
Issue number7
StatePublished - Jul 2010

Keywords

  • Angle of attack
  • Array spacing
  • Elliptical pin-fins
  • Heat transfer characteristic
  • Pressure loss

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