Naslov
Effect of Combined Hole on Particle Deposition in a Turbine Cascade

Autori
Wang, Jin ; Kang, Jiahe ; Zhao, Zhanming ; Mikulčić, Hrvoje ; Sunden, Bengt

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Digital Proceedings of the 15th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES / Ban, Marko - Zagreb, 2020

Skup
15th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES 2020)

Mjesto i datum
Köln, Njemačka, 01.09.2020. - 05.09.2020

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Gas turbine ; particle deposition ; combined hole ; blowing ratio ; inlet angle

Sažetak
Numerical simulations are conducted to investigate an effect of combined hole configurations on particle deposition in an AGTB turbine cascade. The realizable k-ε turbulence model with the discrete phase model (DPM) is used and developed based on user- defined functions. This paper investigates many factors on the particle deposition, such as particle size, blowing ratio and mainstream inlet angle. In order to understand the effect of the hole configuration on the particle deposition, a comparison of results between the combined and the cylindrical holes is conducted by calculations of capture and impact efficiencies. Results show that larger particle size causes more impact on the blade surface, and the impact area on the blade pressure side expands with the increase in the mainstream inlet angle from 123° to 143°. For 10 μm particles (diameter), an increase of the blowing ratio reduces the capture efficiency. It is also found that the particle capture efficiency for the combined hole is lower than that for the cylindrical hole, when the mainstream inlet angle is 123°.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA