Base on similarity theory

experimental investigation of flow and heat transfer characteristics were conducted on two amplificatory leading edge models of lamilloy colling turbine blade

including one model with rhombus pin-fins and the other without pin-fins

the flow resistance coefficient

temperature and surface heat transfer coefficient on target surface were compared between two models. The temperature was measured by infrared thermograph technique

and the local heat flux density was simulated by ANSYS. The results show that the flow resistance of two models increases gradually with the increase of inlet Reynolds number. And the model with rhombus pin-fins has larger flow resistance on the whole. The distribution of local surface heat transfer coefficient on the target surface of two models is similar while the model with rhombus pin-fins has slightly higher value. The difference of average surface heat transfer coefficient for the target surface of two models is also little and the value of the model with rhombus pin-fins is at most 7% larger than the that of other model at the same inlet Reynolds number.