LI Guangchao, CHEN Yukai, ZHANG Wei, et al. Investigation on film cooling effectiveness of fanned hole with broad outlet[J]. Thermal power generation, 2016, 45(4): 60-64.
LI Guangchao, CHEN Yukai, ZHANG Wei, et al. Investigation on film cooling effectiveness of fanned hole with broad outlet[J]. Thermal power generation, 2016, 45(4): 60-64.DOI:
The film cooling performance of fanned hole with broad outlet was numerically investigated by Fluent software and model.The kidney-shaped vortex structure at the various blowing rations(0.5
1.0
1.5and 2.0)was focused on.The numerical results show that
the fan shaped hole jet effectively increases the radial coverage of the cooling air.Compared with the injection field of the cylindrical hole
the cold air and gas mixed field is more helpful for the cold air adhering to the wall
and its film cooling effectiveness is higher than that of the cylindrical hole injection.The film cooling effectiveness at blowing ratios of 1.0
1.5and 2.0has small difference
and they are all obviously higher than the film cooling effectiveness at blowing ratio of 0.5.