Naslov
The influence of water mist injection on the film cooling process of casted turbine blades

Autori
Baleta, Jakov ; Cerinski, Damijan ; Qi, Fengsheng ; Wang, Fang ; Wang, Jin ; Wang, Xuebin

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

Izvornik
Proceedings book 18th International Foundrymen Conference / Dolić, Natalija ; Zovko Brodarac, Zdenka ; Begić Hadžipašić, Anita - Sisak : Metalurški fakultet Sveučilišta u Zagrebu, 2019, 106-121

ISBN
978-953-7082-34-5

Skup
18. Međunarodno savjetovanje ljevača "Suživot znanosti o materijalima i održive tehnologije u gospodarskom rastu" = 18th International Foundryman Conference "Coexistence of material science and sustainable technology in economic growth"

Mjesto i datum
Sisak, Hrvatska, 15.05.2019. - 17.05.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
CFD, Casted turbine blades, film cooling, water mist injection

Sažetak
Casted turbine blades are usually made of Ni- based super alloys, which are capable to withstand higher temperatures than other technical metal materials and have good corrosion resistance properties. The combustion efficiency highly depends on the temperature, but currently used turbine blades materials are not capable to withstand such conditions, therefore utilising the film cooling process is necessary. The influence of water mist injection on the film cooling process of casted turbine blades was numerically investigated. CFD simulations were performed to describe the interaction between the hot stream gas from the combustion chamber and the coolant jet from a cooling hole along with the water mist injection. The validation case with the cylindrical hole was compared to the experimental results and results from Large Eddy Simulation (LES) available in the literature. Temperature distributions were analysed and compared to the case with a laidback hole and console configuration to investigate the influence of injecting the water mist on cooling performance. The results showed the possibility of improving the film cooling performance by implementing the water mist injection system which allows the increase of the temperature in the combustion chamber, and consequently overall gas turbine efficiency.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija, Zrakoplovstvo, raketna i svemirska tehnika, Temeljne tehničke znanosti

POVEZANOST RADA