This article is cited in 11 papers

Effect of the downstream crescent-shaped block height on the flat-plate film flow and cooling performance

Ch. Zhang^a, Zh. Wang<sup>b

a</sup> Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, Tianjin, 300384, China
^b School of Energy and Power Engineering, Shandong University, Jinan, 250061, China

Abstract: Numerical simulations are performed to systematically investigate the effect of the downstream crescent-shaped block height on the flow field and cooling performance for a configuration with a single row of an infinite number of inclined cylindrical holes at various coolant-to-mainstream blowing ratios. The numerical results show that placing a downstream block can significantly alter the downstream flow field due to generation of an additional anti-kidney vortex pair, which improves the cooling performance. Optimal block heights are determined for various blowing ratios.

Keywords: gas turbine, film cooling, crescent-shaped block height, anti-kidney vortex pair, blowing ratio, cooling effectiveness.

UDC: 621.5

Received: 26.09.2017
Revised: 14.02.2018

DOI: 10.15372/PMTF20180525

 English version: Journal of Applied Mechanics and Technical Physics, 2018, 59:5, 951–961

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