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

Nobuhiko Kamagata, Susumu Horio, Koichi Hishida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication2008 Proceedings of the ASME Fluids Engineering Division Summer Conference, FEDSM 2008
Pages499-506
Number of pages8
EditionPART A
DOIs
Publication statusPublished - 18 Sep 2009
Event2008 ASME Fluids Engineering Division Summer Conference, FEDSM 2008 - Jacksonville, FL, United States
Duration: 10 Aug 200814 Aug 2008

Publication series

Name2008 Proceedings of the ASME Fluids Engineering Division Summer Conference, FEDSM 2008
NumberPART A
Volume1

Conference

Conference2008 ASME Fluids Engineering Division Summer Conference, FEDSM 2008
CountryUnited States
CityJacksonville, FL
Period10/08/0814/08/08

Keywords

  • Adaptive control
  • Blunt body
  • Drag/lift reduction
  • PIV measurement

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  • Cite this

    Kamagata, N., Horio, S., & Hishida, K. (2009). Drag reduction for blunt body with cross flow by extremum-seeking control. In 2008 Proceedings of the ASME Fluids Engineering Division Summer Conference, FEDSM 2008 (PART A ed., pp. 499-506). (2008 Proceedings of the ASME Fluids Engineering Division Summer Conference, FEDSM 2008; Vol. 1, No. PART A). https://doi.org/10.1115/FEDSM2008-55081