| Citation: | WU Rong, MIAO Keke, HOU Chang. Study on heat transfer characteristics of V-shaped discrete ribs in turbine blade passage[J]. Journal of Aerospace Power, 2023, 38（12）：2817-2828 doi: 10.13224/j.cnki.jasp.20210390
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The heat transfer characteristics of V-shaped discrete ribs in the internal passage of turbine blade were studied by simulation. The effects of structural parameters (separation positions, separation rib length, separation rib distance) on the heat transfer performance of the channel were investigated. The results showed that: compared with the traditional structure (transverse rib, 60° inclined rib, 60° V-shaped rib), V-shaped discrete rib had more advantages in terms of average relative Nusselt number, comprehensive heat transfer coefficient and temperature distribution uniformity. By changing the discrete parameters, the comprehensive heat transfer coefficient of V-shaped discrete ribs can be greatly improved. The channel had the best heat transfer performance when the separation positions was 2.5 mm, the length of separation rib was 10.0 mm and the distance behind separation rib was 9.6 mm. At the Reynolds number of 30 000, compared with the channel with transverse ribs, the average Nusselt number of the optimized V-shaped discrete ribs increased by 35.75%, and the comprehensive heat transfer coefficient increased by 28.95%.
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