Computational Analysis of Thermal Performance of Inline Pin Fins Over the Wedge Duct and Combustion Chamber Wall

摘要

This paper provides a computational fluid dynamics (CFD) study of the wedge-duct over turbine blade for flow and heat transfer coefficient characteristics. The influence of flow parameters on drop in pressure and heat transfer is investigated using Reynold's numbers of 10000, 20000, and 30000. Two cases of air coolant at 65℃ (Case 1) and 100℃ (Case 2) are considered. Case 1 delivers a low friction coefficient and a better thermal performance parameter, which improves heat transfer of the disturbed pin-fin layout within the wedge duct. Combustion chamber internal walls experience exceptionally high temperatures and heat flux. As a result, arrayed pin fins can be used to improve the heat transfer and cooling efficiency.