Drag reduction for blunt body with cross flow by extremum-seeking control

Nobuhiko Kamagata, Susumu Horio, Koichi Hishida

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

The active flow control, which can adapt to variation of flow velocity and/or direction, is an effective technique to achieve drag reduction, The present study has investigated a separated shear layer and established two control systems; the system reduces drag force and lift force by controlling the separated shear layer to reattachment for variation of flow velocity and /or direction. The adaptive control system to the variation of flow velocity was constructed by using a hot wire anemometer as a sensor to detect flow separation. The system to flow direction was constructed by using pressure transducers as a sensor to estimate drag force and lift force. The extremum-seeking control was introduced as a controller of the both systems. It is indicated from the experimental results that adaptive drag/lift control system to various flow velocity ranging from 3 to 7 m/s and various flow direction ranging from 0 to 30 deg. was established.

本文言語English
ホスト出版物のタイトル2008 Proceedings of the ASME Fluids Engineering Division Summer Conference, FEDSM 2008
ページ499-506
ページ数8
PART A
DOI
出版ステータスPublished - 2009 9 18
イベント2008 ASME Fluids Engineering Division Summer Conference, FEDSM 2008 - Jacksonville, FL, United States
継続期間: 2008 8 102008 8 14

出版物シリーズ

名前2008 Proceedings of the ASME Fluids Engineering Division Summer Conference, FEDSM 2008
番号PART A
1

Other

Other2008 ASME Fluids Engineering Division Summer Conference, FEDSM 2008
CountryUnited States
CityJacksonville, FL
Period08/8/1008/8/14

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

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