Flow characterization of microscale effusion and transpiration air cooling on single blade

Cited 1 time in webofscience Cited 0 time in scopus
  • Hit : 21
  • Download : 0
Micro cooling has drawn attention as the next-generation cooling technique that is better than film cooling for a high-temperature turbine blade. Not to reduce the gas turbine efficiency while having high blade cooling effectiveness, it recommends that the cooling air does not invade or break the hot gas mainstream. This study deals with the flow and cooling phenomena by visualizing the flow around a single blade. The visualization was performed using a DPSS laser and a high-speed CCD camera imaging system. The smoke-wire visualization technique was employed to visualize the mainstream and oil atomized droplets to visualize the coolant flow. Single C3X blade with effusion cooling (hole diameter = 500 mu m) and transpiration cooling (pore diameter = 40 mu m) were selected as the target geometry. The visualization was carried out while varying the coolant flow rate. The visualized qualitative results showed that effusion cooling affects the mainstream at the blowing ratio of 8.0; however, transpiration cooling relatively stable the boundary layer up to the blowing ratio of 21.2. Additionally, the numerical simulation results were compared with the experimental data to analyze not only the flow characteristics but also the cooling characteristics.
Publisher
ELSEVIER
Issue Date
2022-03
Language
English
Article Type
Article
Citation

CASE STUDIES IN THERMAL ENGINEERING, v.31

ISSN
2214-157X
DOI
10.1016/j.csite.2022.101863
URI
http://hdl.handle.net/10203/296560
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 1 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0