Fig. 1 The extended jet hole impingement cooling systems The extended jet hole impingement cooling systems More

Fig. 2 Experimental setup [ 26 ]: ( a ) a photograph and ( b ) a schematic Experimental setup [26]: (a) a photograph and (b) a schematic More

Fig. 3 Illustration of the transient TLC measurement technique Illustration of the transient TLC measurement technique More

Fig. 4 A typical history of air temperature with time in supply plenum A typical history of air temperature with time in supply plenum More

Fig. 5 Uncertainty contour for the case of L = 2.5 d j at Re j = 3.0 × 10 4 Uncertainty contour for the case of L = 2.5dj at Rej = 3.0 × 104 More

Fig. 6 Comparisons of area-averaged Nu between measurements and data in the literature Comparisons of area-averaged Nu between measurements and data in the literature More

Fig. 7 Computation domain Computation domain More

Fig. 8 Validation of the turbulence model: L = 1.5 d j and Re j = 1.0 × 10 4 Validation of the turbulence model: L = 1.5dj and Rej = 1.0 × 104 More

Fig. 9 Flow distributions along the streamwise direction: ( a ) crossflow-to-jet mass flow flux ratio and ( b ) local jet mass flux ratio Flow distributions along the streamwise direction: (a) crossflow-to-jet mass flow flux ratio and (b) local jet mass flux ratio More

Fig. 10 Comparisons of crossflow and local jet mass flux between the present study and literature [ 19 , 23 ] Comparisons of crossflow and local jet mass flux between the present study and literature [19,23] More

Fig. 11 Three-dimensional streamlines issued from the jet holes (CFD) Three-dimensional streamlines issued from the jet holes (CFD) More

Fig. 12 Normalized pressure on the target (CFD) Normalized pressure on the target (CFD) More

Fig. 13 Jet trajectories for the last three rows (CFD): L = 0 d j versus L = 2.5 d j Jet trajectories for the last three rows (CFD): L = 0dj versus L = 2.5dj More