In order to study the convective heat transfer characteristics of turbine blade trailing edge influenced by the pin fin

four kinds of pin fins were designed and the film cooling characteristics with pin fins of diverse shapes and alignments were studied by an experimental method using infrared cameras.The result shows that

when the blow ratio is low

the convective heat transfer performance of turbine blade trailing edge with water-drop-shaped pin fin I is better than others;and when the blow ratio is high

the convective heat transfer performance of turbine blade trailing edge with the column-shaped pin fin Ⅱ is better

and the convective coefficient of turbine blade trailing edge with the water-drop-shaped pin fin Ⅱ is the smallest.At the same position of the trailing edge

the convective coefficient increases with the increase of the blow ratio.