The Influence of Large-Scale High-Intensity Turbulence on Vane Heat Transfer
- 1 January 1997
- journal article
- Published by ASME International in Journal of Turbomachinery
- Vol. 119 (1), 23-30
- https://doi.org/10.1115/1.2841007
Abstract
An experimental research program was undertaken to examine the influence of large-scale high-intensity turbulence on vane heat transfer. The experiment was conducted in a four-vane linear cascade at exit Reynolds numbers of 500,000 and 800,000 based on chord length. Heat transfer measurements were made for four inlet turbulence conditions including a low turbulence case (Tu ≅ 1 percent), a grid turbulence case (Tu ≅ 7.5 percent), and two levels of large-scale turbulence generated with a mock combustor at two upstream locations (Tu ≅ 12 percent and 8 percent). The heat transfer data demonstrated that the length scale, Lu, has a significant effect on stagnation region and pressure surface heat transfer.Keywords
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