... to coolant jet behaviors, which were determined by both the coolant injection ratio and the hole orientation angle. Quantitative comparisons showed that deposition decreased overall cooling effectiveness by 22% on the flat plate cooled by the compound-angled hole with the lowest blowing ratio of 0.5, while...

.... The dimensionless lateral distance (PoD) and compound angle (CA) of the double holes have relative influence on the film cooling performance of the combined-hole unit. At the low blowing ratio, increasing symmetrical compound angle (SCA) has positive influence on the area-average effectiveness (EFF) of the combined...