RT Journal Article ID 4adb9f687f2f32dc A1 Zhang, Jingyu A1 Wei, Jieli A1 Wang, Fei A1 Jin, Yi A1 He, Xiaomin T1 EXPERIMENTAL AND NUMERICAL INVESTIGATION OF THE EFFECTIVENESS OF IMPINGEMENT–FILM HYBRID COOLING JF Heat Transfer Research JO HTR YR 2019 FD 2019-08-21 VO 50 IS 14 SP 1333 OP 1350 K1 impingement-film cooling K1 cooling effectiveness K1 liner cooling technique K1 triple-swirler combustor K1 wall temperature AB This paper reports on an experimental and numerical study of an impingement-film hybrid cooling technique. The effects of four important parameters on cooling effectiveness are discussed, including density flow ratio (DFR), length of inducting slab, jet-to-slab spacing, and axial location of jets. The temperatures of hot gas and coolant were 430 K and 300 K, respectively. The results show that the cooling effectiveness can be increased either by increasing the DFR or by increasing the length of the inducting slab. In the range of DFR higher than 2, reducing the jet-to-slab spacing will improve the cooling effectiveness significantly. The axial location of jets has little influence on cooling effectiveness in the present work. PB Begell House LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,3792b2067b513d24,4adb9f687f2f32dc.html