Pregled bibliografske jedinice broj: 956710
Effect of spherical blockage configurations on film cooling
Effect of spherical blockage configurations on film cooling // Thermal science, 22 (2018), 5; 1111, 10 doi:10.2298/tsci171229257w (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 956710 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Effect of spherical blockage configurations on film cooling
Autori
Wang, Jin ; Ke, Tian ; Zhang, Kai ; Baleta, Jakov ; Sundén, Bengt
Izvornik
Thermal science (0354-9836) 22
(2018), 5;
1111, 10
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
film cooling, blockage, mist injection, sphere, gas turbine
Sažetak
With increasing inlet temperature of gas turbines, turbine blades need to be effectively protected by using cooling technologies. However, the deposition from the fuel impurities and dust particles in the air is often found inside film holes, which results in partial hole blockage. In this paper, the deposition geometry is simplified as a rectangular channel, and the effect of three blockage ratios is investigated by using the computational fluid dynamics. In addition, water droplets are also released from the coolant inlet to provide a comparison of the results with and without mist injection. It is found that the lateral film cooling effectiveness is reduced with increasing blockage ratio. For all the cases with the blowing ratio 0.6, 1% mist injection provides an improvement of the cooling performance by approximately 10%.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
Citiraj ovu publikaciju:
Časopis indeksira:
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
