Endwall Heat Transfer and Cooling Performance of a Transonic Turbine Vane With Upstream Injection Flow

Li, Zhigang; Bai, Bo; Li, Jun; Mao, Shuo; Ng, Wing; Xu, Huiying; Fox, Michael

doi:10.1115/1.0002775v

Cited by 1 publication

(1 citation statement)

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“…Gong Shengkai [6] studied the heat protection effect of TBC through theoretical formulas and experimental tests, and the research shows that the thickness and heat protection effect of the TBC are also close to linear relationship, and the thicker the TBC the greater the role of changes in thermal conductivity for increasing the heat protection effect of the coating. Yang [7] and Zhou [8] have developed environmental test devices for TBC, which offer an important service for the design of film cooling hole to blade. Han [9] showed that it can reduce the metal surface temperature by slightly 100 K to 350 K when applying the TBC.…”

Section: Introductionmentioning

confidence: 99%

Verification of the Heat protection and Cooling Effects for Thermal Barrier Coating on Turbine Blade

Li,

Zhang,

Yang

et al. 2023

J. Phys.: Conf. Ser.

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Aiming at the difficulty of directly testing the heat protection effect of thermal barrier coating (TBC) on turbine blades in real working conditions of Aero-engines, in order to obtain the heat protection performance and TBC cooling effect on turbine blades, this study first conducted a simulation test of heat protection effect at 1100K test temperature on a tester, and then combined with the test results of TBC heat protection effect, completed the verification in real working conditions of Aero-engine. The test results verify that the actual heat protection effect of the TBC is roughly equivalent on the suction surface and pressure surface of the blade, but it is the worst in the trailing edge region with the blade basin, with an average relative cooling efficiency of about 0.642 in the middle section, and a maximum absolute heat protection effect of about 41 K. At the same time, the blade has no ablation phenomenon, and the TBC is in good state on the blade surface, and it is free of defects such as cracks, wrinkling, and peeling, as verified by the coupon test with a maximum gas temperature of 1800K for a cumulative period of 21 hours.

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Section: Introductionmentioning

confidence: 99%