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  • Summary & Details

Boundary Layer Control and Flow-Induced Noise Reduction in Duct Bends Using Surface Microstructures

表面微細構造によるダクト曲がり部における境界層制御と空力騒音低減

Detailed Information

Author(J)1) 野村 俊平, 2) 祖父江 祐太, 3) 小坂 翔, 4) 吉田 憲司, 5) 関 加夫里, 6) 酒井 康彦, 7) 山田 周歩, 8) 寺島 修
Author(E)1) Shunpei Nomura, 2) Yuta Sobue, 3) Sho Kosaka, 4) Kenji Yoshida, 5) Kaori Seki, 6) Yasuhiko Sakai, 7) Shuho Yamada, 8) Osamu Terashima
Affiliation(J)1) 岐阜大学, 2) 岐阜大学, 3) デンソー, 4) デンソー, 5) デンソー, 6) 名古屋産業科学研究所, 7) 富山県立大学, 8) 岐阜大学
Affiliation(E)1) Gifu University, 2) Gifu University, 3) DENSO, 4) DENSO, 5) DENSO, 6) Nagoya Industrial Science Research Institute, 7) Toyama Prefectural University, 8) Gifu University
Abstract(J)空調ダクトや送風ダクトの曲がり部で生じるはく離・再付着流れを対象に,1mm未満の表面微細構造による境界層制御が空力騒音および圧力損失に及ぼす影響を実験的に検討した.微細構造の特性や形状を最適化することで,圧力損失を増加させることなく特定周波数帯の空力騒音を低減できることが明らかとなった.

Translation

Abstract(E)This study experimentally investigates the effects of boundary layer control using surface microstructures smaller than 1 mm on flow-induced noise and pressure loss in separated and reattached flows occurring in bends of ventilation and air-duct systems. The results reveal that optimizing the characteristics and geometry of the microstructures enables reduction of flow-induced noise in specific frequency bands without increasing pressure loss.

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