Volume 36 Issue 1
Jan.  2021
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LI Jie, TIAN Shuqing, YANG Meisong, DENG Hongwu. Flow and heat transfer characteristics in roughened rotating wedge-shaped channel with pin-fins[J]. Journal of Aerospace Power, 2021, 36(1): 34-41. doi: 10.13224/j.cnki.jasp.2021.01.005
Citation: LI Jie, TIAN Shuqing, YANG Meisong, DENG Hongwu. Flow and heat transfer characteristics in roughened rotating wedge-shaped channel with pin-fins[J]. Journal of Aerospace Power, 2021, 36(1): 34-41. doi: 10.13224/j.cnki.jasp.2021.01.005

Flow and heat transfer characteristics in roughened rotating wedge-shaped channel with pin-fins

doi: 10.13224/j.cnki.jasp.2021.01.005
  • Received Date: 2020-04-28
  • Publish Date: 2021-01-28
  • The trailing edge of the turbine rotor blades featured lateral extraction and the fin-pins were subject to Coriolis, centrifugal force, and induced buoyancy. Experimental methods were used to study its heat transfer and flow resistance characteristics within the parameters of the actual working conditions: Reynolds number and rotation number ranging from 20 000 to 45 000 and 0 to 0155, respectively. The experimental results showed that the presence of the pin-fins made the bottom stagnation area larger, whereas it also significantly improved the heat transfer in the middle radius. The ratio of the flow resistance and the thermal performance decreased with the Reynolds number. However, the rotation enhanced the heat transfer at the top and weakened that at the bottom. In general, the rotation increased the flow resistance, while the average heat transfer and the thermal performance were deteriorated.

     

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