Numerical investigation of relation between unsteady behavior of tip leakage vortex and rotating disturbance in a transonic axial compressor rotor

K. Yamada, K. Funazaki, H. Sasaki

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

32 被引用数 (Scopus)

抄録

The purpose of this study is to have a better understanding of the unsteady behavior of tip clearance flow at near-stall condition from a multi-passage simulation and to clarify the relation between such unsteadiness and rotating disturbance. This study is motivated by the following concern. A single passage simulation has revealed the occurrence of the tip leakage vortex breakdown at near-stall condition in a transonic axial compressor rotor, leading to the unsteadiness of the tip clearance flow field in the rotor passage. These unsteady flow phenomena were similar to those in the rotating instability, which is classified in one of the rotating disturbances. In other words, it is possible that the tip leakage vortex breakdown produces a rotating disturbance such as the rotating instability. Three-dimensional unsteady RANS calculation was conducted to simulate the rotating disturbance in a transonic axial compressor rotor (NASA Rotor 37). The four-passage simulation was performed so as to capture a short length scale disturbance like the rotating instability and the spike-type stall inception. The simulation demonstrated that the unsteadiness of tip leakage vortex, which was derived from the vortex breakdown at near-stall condition, invoked the rotating disturbance in the rotor, which is similar to the rotating instability.

本文言語英語
ホスト出版物のタイトル2008 Proceedings of the ASME Turbo Expo
ホスト出版物のサブタイトルPower for Land, Sea, and Air
ページ425-436
ページ数12
PART A
DOI
出版ステータス出版済み - 2008
イベント2008 ASME Turbo Expo - Berlin, ドイツ
継続期間: 6月 9 20086月 13 2008

出版物シリーズ

名前Proceedings of the ASME Turbo Expo
番号PART A
6

その他

その他2008 ASME Turbo Expo
国/地域ドイツ
CityBerlin
Period6/9/086/13/08

!!!All Science Journal Classification (ASJC) codes

  • 工学(全般)

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