Shote, Adeola SuhudHuyssen, Barbara BarbieriMahmood, G.I. (Gazi)2025-01-202025-01-202024Adeola S. Shote, Barbara B. Huyssen & Gazi I. Mahmood (11 Nov 2024): Endwall film-cooling in a cascade with filleted vane, upstream discrete slots, and holes, Experimental Heat Transfer, DOI: 10.1080/08916152.2024.2424820.0891-6152 (print)1521-0480 (online)10.1080/08916152.2024.2424820http://hdl.handle.net/2263/100188In vane cascades, large filleted vanes influence aerodynamics, while upstream endwall film-cooling arrangement impacts aero-thermal performance. This study explores experimental investigations on endwall flows and film-cooling effectiveness in a filleted vane cascade using discrete slots and holes. Two fillet profiles are examined covering the leading-edge area to either the throat or 62% of the axial chord. Film-cooling employs two slots and two rows of holes in the leading-edge region with inlet blowing ratios ranging from 1.0 to 2.8. Results show variations in total pressure loss and Nusselt number between filleted and un-filleted vanes, highlighting optimal film-cooling effectiveness with the smaller fillet profiles.en© 2024 The Author(s). Published with license by Taylor & Francis Group, LLC. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http:// creativecommons.org/licenses/by-nc-nd/4.0/).Passage-vortexEndwall heat transferFilm-cooling effectivenessTotal pressurelossFilm-cooling distributionsSDG-07: Affordable and clean energySDG-09: Industry, innovation and infrastructureArticle