Abstract
Aiming at investigating the effects of crossflow and vortex generator on film cooling characteristics of cylindrical hole and fan-shaped hole, the film cooling performance of four different structures was measured experimentally by infrared camera. The blowing ratio varies from 0.5 to 2. The Reynolds number of the mainstream based on the hole diameter remains at 7000 and the inlet Reynolds number of crossflow varies from 20,000 to 60,000 for the crossflow cases. The experimental results show that the film cooling performance of the cylindrical hole model with the vortex generator and the fan-shaped hole model with the vortex generator decreases continuously with the increase of the crossflow Reynolds number. The film cooling performance of the cylindrical hole model with the vortex generator shows a trend of first increasing and then decreasing with the increase of the blowing ratio, and the best cooling performance is obtained under the condition of the blowing ratio M = 1.5. The film cooling performance of the fan-shaped hole model with the vortex generator is continuously improved with the increase of the blowing ratio. The film cooling performance of the fan-shaped hole model with the vortex generator is stronger than other models under all working conditions, especially its area-averaged film cooling effectiveness is increased by more than 100%, compared with the cylindrical hole model.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
