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  • Summary & Details

Elucidation of fluctuating aerodynamic noise in an using a simple shape model

将来空力技術研究会 空力音Gr成果報告(2018年4月~2022年3月) 基礎実験によるバサバサ音のメカニズム解明

Detailed Information

Category(J)PPT資料

Translation

Category(E)PPT slides
Author(J)1) 渡邉 直人, 2) 本間 駿
Author(E)1) Naoto Watanabe , 2) Shun Homma
Affiliation(J)1) 株式会社SUBARU, 2) 三菱自動車工業株式会社
Affiliation(E)1) SUBARU CORPORATION, 2) Mitsubishi Motors Corporation
Abstract(J)本研究は,変動風を再現できる小型無響風洞で,自然風の変動によって変動する空力騒音(バサバサ音)の現象解明である.変調周波数解析からバサバサ音の帯域が周波数1kHz以上、変調周波数5Hz以下ということがわかった.変動風下での空力音源の音波発生部位である剥離周辺領域の流れ場の解明が課題である.

Translation

Abstract(E)This study is a phenomenon elucidation of the aerodynamic noise to fluctuate in the small-scale acoustic wind tunnel which can reproduce fluctuating natural wind. The band of the noise is understood that it was less than modulation frequency 5Hz and frequency 1kHz or more by modulation frequency analysis. A technical problem is an elucidation of the flow around the separation area that acoustic waves occur.

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