Issue |
MATEC Web Conf.
Volume 115, 2017
XXXIII Siberian Thermophysical Seminar (STS-33)
|
|
---|---|---|
Article Number | 09003 | |
Number of page(s) | 4 | |
Section | Chapter 9 Heat and mass transfer in turbulent flows including swirling and combustion | |
DOI | https://doi.org/10.1051/matecconf/201711509003 | |
Published online | 10 July 2017 |
Flat plate film cooling at the coolant supply into triangular and cylindrical craters
1 Institute of Engineering Thermophysics of NAS of Ukraine, Ukraine
2 National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Ukraine
* Corresponding author: artem.khalatov@mail.ru
The results are given of the film cooling numerical simulation of three different schemes including single-array of the traditional round inclined holes, as well as inclined holes arranged in the cylindrical or triangular dimples (craters). The results of simulation showed that at the medium and high values of the blowing ratio (m > 1.0) the scheme with coolant supply into triangular craters improves the adiabatic film cooling efficiency by 1.5…2.7 times compared to the traditional array of inclined holes, or by 1.3…1.8 times compared to the scheme with coolant supply into cylindrical craters. The greater film cooling efficiency with the coolant supply into triangular craters is explained by decrease in the intensity of secondary vortex structures (“kidney” vortex). This is due to the partial destruction and transformation of the coolant jets structure interacting with front wall of the crater. Simultaneously, the film cooling uniformity is increased in the span-wise direction.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.