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Woo-Sung Choi

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Open access Oct 2026

Design and Performance Evaluation of 777TD Hybrid Geometry for Additively Manufactured Meso-Scale Cooling Holes

To address overhang sagging in laser powder bed fusion (L-PBF) of meso-scale film-cooling holes, this study proposes a 777TD hybrid geometry combining the nominal 7° diffuser features of a 777 hole with a pointed, self-supporting roof. Ideal smooth-wall computational fluid dynamics (CFD) calculations compared cylindric...

Woo-Sung Choi, Seungyeop Lee, Jih-Yun Sung et al. · 0 citations

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