Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Detailed Measurement of Heat/Mass Transfer in a Rotating Equilateral Triangular Channel with Smooth Walls

회전하는 매끈한 정삼각 유로 내 열/물질전달 분포 측정

  • 김경민 (연세대학교 대학원 기계공학과) ;
  • 이동현 (연세대학교 대학원 기계공학과) ;
  • 조형희 (연세대학교 기계공학부)
  • Published : 2007.07.01
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Abstract

The present study investigated the heat/mass transfer characteristics in an equilateral triangular channel simulating the leading edge cooling passage in gas turbine blade. Using naphthalene sublimation method and pressure measurement experiments, local mass (heat) transfer and pressure coefficients were obtained. The experiments were conducted with three rotating numbers between 0.0 and 0.1; two channel orientations of $0^{\circ}$ (model A) and $30^{\circ}$ (model B); the fixed Reynolds number of 10,000. The results showed that the channel rotation caused the heat transfer discrepancy between suction and pressure sides. Due to the secondary flow induced by Coriolis force, the high heat transfer appeared on the pressure side. When the channel orientation was $30^{\circ}$ (model B), the secondary flow caused the more uniform heat transfer distribution among leading edge and inner wall on pressure side than that of the model A.

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References

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Cited by

  1. vol.11, pp.1, 2008, https://doi.org/10.5293/KFMA.2008.11.1.089