THERMAL SCIENCE

International Scientific Journal

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Liuliu Shi

,

Haobo Fan

,

Eryun Chen

NUMERICAL STUDY OF THE EFFECT OF PERIODIC WAKE ON FILM COOLING EFFECTIVENESS ON A PLATE

ABSTRACT
The research presented in this paper is devoted to exploring the influence of up-stream periodic wake on the film cooling effectiveness on a downstream plate. This investigation is carried out through rigorous numerical simulations utilizing a ded-icated simulation model. The model was developed to examine the impact of up-stream periodic wake on film cooling performance across varying blowing ratios (M = 0.3, 0.5, and 1.0) and wake sweeping frequencies (10 Hz, 20 Hz, and 40 Hz). Comparative analyses are conducted with a baseline scenario involving a constant jet without wake. The objective of these analyses is to provide a deeper understand-ing of the mechanisms through which upstream wake influences film cooling per-formance, ultimately shedding light on the flow characteristics and cooling effec-tiveness of film cooling under sweeping wakes.
KEYWORDS
gas turbine, film cooling, Wake, blowing ratio
PAPER SUBMITTED: 2024-09-14
PAPER REVISED: 2024-11-08
PAPER ACCEPTED: 2024-12-14
PUBLISHED ONLINE: 2025-01-09
DOI REFERENCE: https://doi.org/10.2298/TSCI240914278S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2025, VOLUME 29, ISSUE Issue 2, PAGES [1197 - 1206]
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Numerical study of the effect of periodic wake on film cooling effectiveness on a plate

2025 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence