LI Guangchao, CAO Xifeng, LIU Yongquan, et al. Experimental study on film cooling characteristics of lamilloy at different blowing ratios[J]. Thermal power generation, 2015, 44(9): 43-47.
LI Guangchao, CAO Xifeng, LIU Yongquan, et al. Experimental study on film cooling characteristics of lamilloy at different blowing ratios[J]. Thermal power generation, 2015, 44(9): 43-47.DOI:
The narrow-band transient liquid crystal technique was applied to carry out experimental investigation on cooling efficiency and heat transfer coefficient of the outer surface of a narrow chamber lamilloy with double-row film cooling holes
under conditions with blowing ratio of 1.0
1.5and 2.0
and film hole injection angle of 30°and 90°.The results show that
for the lamilloy model
the film cooling efficiency in downstream area of the double-row hole decreased with the increasing blowing ratio.The distribution of cooling efficiency is different for film holes with different injection angles.For lamilloys with injection angle of 30°and 90°
the surface heat transfer coefficient of the film hole changed little with the blowing ratio.