Abstract
The film cooling performance of cylindrical holes embedded in a transverse trench is evaluated for various shapes of the trench and blowing ratios, and an optimum geometry for the trenched film-cooling hole is suggested. In order to analyze the turbulent flow and film cooling performance, three-dimensional Reynolds-averaged Navier-Stokes analysis is performed using the shear stress transport turbulence model. Tetrahedral and hexahedral computational meshes are tested, and the numerical solution is validated by comparison with experimental data. A parametric study with two geometric variables, the height and width of the trench, is performed. From the results of the parametric study and flow field analysis, shifting the film cooling hole toward the upstream end of the trench is proposed to enhance film cooling performance. In addition, the optimum downstream trench width is determined.
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.
