Detached eddy simulation of unsteady flow field and prediction of aerodynamic sound in a half-ducted propeller fan

K. Kusano, J. H. Jeong, K. Yamada, M. Furukawa

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

8 被引用数 (Scopus)

抄録

Three-dimensional structures and unsteady nature of vortical flow fields in a half ducted propeller fan have been investigated by a detached eddy simulation (DES) based on k-ω two-equation turbulence model. The validity of the numerical simulation performed in the present study was demonstrated by the comparison to LDV measurement results. The simulation shows the tip vortex is so strong that it dominates the flow field near the rotor tip. The tip vortex does not impinge on the pressure surface of the adjacent blade directly, however it interacts with the shroud surface and induces a separation vortex on the shroud. Furthermore, this separation vortex interacts with the pressure surface of the adjacent blade. These flow structures cause high pressure fluctuation on the shroud surface and the blade pressure surface. Besides, sound pressure levels were predicted by Ffowcs William-Hawkings equation based on Lighthill's acoustic analogy using the unsteady surface pressure data obtained by DES. As a result, the degree of contribution by each flow structure to overall sound has been estimated quantitatively.

本文言語英語
ホスト出版物のタイトルASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
ページ713-722
ページ数10
PARTS A, B, C, D
DOI
出版ステータス出版済み - 12月 1 2011
イベントASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011 - Hamamatsu, 日本
継続期間: 7月 24 20117月 29 2011

出版物シリーズ

名前ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
番号PARTS A, B, C, D
1

その他

その他ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
国/地域日本
CityHamamatsu
Period7/24/117/29/11

!!!All Science Journal Classification (ASJC) codes

  • 流体および伝熱

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