LI Guangchao, FU Jian, LIU Yongquan, et al. Influence of temperature ratio on cooling efficiency of 3-in-1 hole injection film[J]. Thermal power generation, 2015, 44(4): 50-55.
LI Guangchao, FU Jian, LIU Yongquan, et al. Influence of temperature ratio on cooling efficiency of 3-in-1 hole injection film[J]. Thermal power generation, 2015, 44(4): 50-55.DOI:
To explore the difference of film cooling characteristics between small temperature ratio and real temperature ratio of the coolant and gas
the flow field
temperature field and film cooling efficiency of3-in-1hole injection film were studied
on the basis of Fluent software
by using the realizable k-ε model with temperature ratio of 1.1and 2.0
the blowing ratio of 0.5and 2.0.The results show that
at blowing ratio of 0.5
the diffusions of coolant with both temperature ratios are identical and the radial average cooling efficiency has little difference.At blowing ratio of 2.0
the coolant radial diffusion with temperature ratio of 2.0is better than that with temperature ratio of 1.1.The radial average cooling efficiency with temperature ratio of 2.0is about 13.4%to 55.5% higher.