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2013 Fiscal Year Final Research Report

Verification Study toward the Strategic Drag Reduction Control of Practical Bluff Boies

Research Project

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Project/Area Number 23560179
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Fluid engineering
Research InstitutionHokkaido University

Principal Investigator

TSUBOKURA Makoto  北海道大学, 工学(系)研究科(研究院), 准教授 (40313366)

Project Period (FY) 2011 – 2013
Keywords乱流 / 空力 / 抵抗低減 / ラージエディシミュレーション
Research Abstract

The six research topics we have involved in this project are as follows: (1)Vortex structures and the mechanisms of the aerodynamic drag acting on simplified vehicle models, (2) Mathematical models for the dynamic flow control, (3) Instability of trailing edge vortices, (4) Proposal of the drag reduction control, (5) Effect of the drag reduction control on the on-road conditions, (6) Strategic technology for the drag reduction of real vehicles. First, by imposing dynamic pitching, yawing and lane-change motions on simplified vehicle models, we have revealed how these transient aerodynamic forces are caused by unsteady flow structures around the vehicle models. Applying this knowledge acquired by the simplified models to real sedan-type vehicle shapes, we have clarified the mechanisms of how drag and lift forces changes through the boundary layer and vortex structures on and around the vehicles, then examined possibility of reducing the drag by controlling eddy structures.

  • Research Products

    (37 results)

All 2014 2013 2012 2011 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (27 results) Remarks (1 results)

  • [Journal Article] Vehicle Aerodynamics Simulation for the Next Generation on the K-computer : Part 1 Development of the framework for fully unstructured grids up to 10 billion numerical elements2014

    • Author(s)
      Makoto Tsubokura, Andrew Hamilton Kerr, Keiji Onishi, Yoshimitsu Hashizume
    • Journal Title

      SAE International Journal of Passenger Cars–Mechanical Systems

      Volume: 7(2) Pages: 2014-01-0621

    • Peer Reviewed
  • [Journal Article] 自動車の高速操舵走行時の安定性に寄与する車体周りの非定常流れ特性2014

    • Author(s)
      岡田義浩,農沢隆秀,坪倉誠,中島卓司
    • Journal Title

      日本機械学会論文集

      Volume: 第80巻, 809号(transjsme.2014fe0009) Pages: 1-17

    • Peer Reviewed
  • [Journal Article] Coupled analysis of unsteady aerodynamics and vehicle motion of a road vehicle in windy conditions2013

    • Author(s)
      Takuji Nakashima, Makoto Tsubokura, Mariano Vázquez, Herbert Owen, Yasuaki Doi
    • Journal Title

      Journal of Computers & Fluids

      Volume: vol.80(10) Pages: 1-9

    • Peer Reviewed
  • [Journal Article] Aerodynamic Stability of Road Vehicles in Dynamic Pitching Motion2013

    • Author(s)
      Seeyuan Cheng, Makoto Tsubokura, Yoshihiro Okada, Takahide Nouzawa, Takuji Nakashima, and Deog Hee Doh
    • Journal Title

      Journal of Wind Engineering and Industrial Aerodynamics

      Volume: vol.122 Pages: 146-156

    • Peer Reviewed
  • [Journal Article] 自動車横風突風遭遇時の非定常空力応答と車体形状の影響について2013

    • Author(s)
      池田隼,坪倉誠,長谷川巧,小森谷徹,中島卓司
    • Journal Title

      日本機械学会論文集(B編)

      Volume: 第79巻, 806号 Pages: 2077-2092

    • Peer Reviewed
  • [Journal Article] 車両運動時に発生する非定常空気力と流れ場に関する研究2013

    • Author(s)
      中江雄亮,池田準,安木剛,田中博,山下太郎,坪倉誠,中島卓司
    • Journal Title

      自動車技術会論文集

      Volume: vol.44, No.6(2013年春季大会で講演) Pages: 1471-1476

    • Peer Reviewed
  • [Journal Article] 自動車のホイール回転が車両空力に及ぼす影響に関するLES解析2013

    • Author(s)
      池田隼,坪倉誠,小林竜也,長谷川巧,小森谷徹
    • Journal Title

      ながれ(日本流体力学会誌)

      Volume: vol.32, No.2 Pages: 107-111

    • Peer Reviewed
  • [Journal Article] Numerical Quantification of Aerodynamic Damping on Pitching of Vehicle-Inspired Bluff Body2012

    • Author(s)
      Seeyuan Cheng, Makoto Tsubokura, Takuji Nakashima, Takahide Nouzawa, Yoshihiro Okada
    • Journal Title

      Journal of Fluids and Structures

      Volume: vol.30 Pages: 188-204

    • Peer Reviewed
  • [Journal Article] Unsteady vehicle aerodynamics during a dynamic steering action : 2nd report, Numerical analysis2012

    • Author(s)
      Tsubokura, M., Ikawa, Y., Okada, Y., Nakashima, T., Nouzawa, T.
    • Journal Title

      SAE International Journal of Passenger Cars–Mechanical Systems

      Volume: 5(1) Pages: 395-411

    • Peer Reviewed
  • [Presentation] 自動車レーンチェンジ運動中の空力安定性に関するLES解析2013

    • Author(s)
      池田隼,坪倉誠,中江雄亮,中島卓司,山中淳,田中博,安木剛
    • Organizer
      第27回数値流体力学シンポジウム
    • Place of Presentation
      名古屋大学東山キャンパス(名古屋市)
    • Year and Date
      20131217-19
  • [Presentation] サーキット走行を模擬したフォーミュラカーの空力シミュレーション2013

    • Author(s)
      奈良康平,坪倉誠,池田隼,竹本豊和,大西慶治,中島卓司,佐々木良浩
    • Organizer
      第27回数値流体力学シンポジウム
    • Place of Presentation
      名古屋大学東山キャンパス(名古屋市)
    • Year and Date
      20131217-19
  • [Presentation] Transient Aerodynamics of Road Vehicles during Pitching Oscillation2013

    • Author(s)
      Cheng See Yuan, Makoto Tsubokura, Takuji Nakashima, Yoshihiro Okada, Takahide Nouzawa
    • Organizer
      2nd International Conference on Recent Advances in Automotive Engineering & Mobility Research (ReCAR 2013)
    • Place of Presentation
      hotel Furama, Kala Lumpur, Malaysia
    • Year and Date
      20131216-18
  • [Presentation] 実車数値風洞の開発2013

    • Author(s)
      坪倉誠
    • Organizer
      日本機械学会第91期流体工学部門講演会フォーラム「京を利用した先端的産業応用事例とスパコンによる流体工学研究の新たな展開」
    • Place of Presentation
      九州大学伊都キャンパス(福岡市)
    • Year and Date
      20131109-10
  • [Presentation] 自動車の旋回および滑り運動により生じる空気力について2013

    • Author(s)
      中島卓司,岡田義浩,坪倉誠,農沢隆秀,土井康明
    • Organizer
      自動車技術会2013年秋季大会
    • Place of Presentation
      名古屋国際会議場(名古屋市)(46-20135844)
    • Year and Date
      20131023-25
  • [Presentation] Unsteady aerodynamics of a road vehicle with transient yaw angle change2013

    • Author(s)
      Daiki Matsumoto, Makoto Tsubokura, Keiji Onishi, Takuji Nakashima, Thomas Indinger, Johannes Wojciak
    • Organizer
      自動車技術会2013年秋季大会
    • Place of Presentation
      名古屋国際会議場(名古屋市)
    • Year and Date
      20131023-25
  • [Presentation] 自動車が旋回および滑り運動時に生じる流体力の曳航水槽模型実験2013

    • Author(s)
      藤原創太,中島卓司,土井康明,岡田義浩,農沢隆秀,坪倉誠
    • Organizer
      日本流体力学会年会2013
    • Place of Presentation
      東京農工大学小金井キャンパス(小金井市)
    • Year and Date
      20130912-14
  • [Presentation] 大規模計算の産業応用2013

    • Author(s)
      坪倉誠
    • Organizer
      日本機械学会2013年度年次大会ワークショップ「CFDの産業活用における方向性」
    • Place of Presentation
      岡山大学津島キャンパス(岡山市)(W011001)
    • Year and Date
      20130909-11
  • [Presentation] HPC-LESによる自動車の次世代非定常空力解析2013

    • Author(s)
      坪倉誠,大西慶治,中島卓司
    • Organizer
      日本機械学会2013年度年次大会
    • Place of Presentation
      岡山大学津島キャンパス(岡山市)(J011013)
    • Year and Date
      20130908-11
  • [Presentation] A Numerical Analysis of Unsteady Aerodynamics of Road Vehicle during Lane-Change Maneuvering2013

    • Author(s)
      Jun Iketa, Makoto Tsubokura, Yusuke Nakae, Takuji Nakashima, Jun Yamamura, Hiroshi Tanaka, Tsuyoshi Yasuki
    • Organizer
      Proceedings of the ASME 2013 Fluids Engineering Summer Meeting
    • Place of Presentation
      Hyatt Regency Lake Tahoe Resort, Spa & Casino, Incline Village, Nevada, USA(FEDSM2013-16447)
    • Year and Date
      20130707-11
  • [Presentation] Unsteady Aerodynamics Simulation of a Road Vehicle Running with Cyclic Yaw and Side-Slip Motions2013

    • Author(s)
      Takuji Nakashima, Yoshihiro Okada, Takahide Nouzawa, Makoto Tsubokura
    • Organizer
      31st AIAA Applied Aerodynamics Conference
    • Place of Presentation
      Sheraton San Diego, San Diego, CA(AIAA-2013-3041)
    • Year and Date
      20130624-27
  • [Presentation] Aerodynamic Pitching Stability of Sedan-Type Vehicles Influenced by Pillar-Shape Configurations2013

    • Author(s)
      Cheng, S.Y., Tsubokura, M., Okada, Y., Nakashima, T., Nouzawa, T.
    • Organizer
      2013 SAE World Congress
    • Place of Presentation
      Cobo Center, Detroit, Michigan, USA(2013-01-1258, pp.203-212)
    • Year and Date
      20130416-18
  • [Presentation] Unsteady Aerodynamics of Road Vehicle in Dynamic Maneuvering2012

    • Author(s)
      Tsubokura, M., Kobayashi, R., Ikawa, Y., Nakashima, T., Okada, Y., Kamioka, T., Nouzawa, T.
    • Organizer
      30th Applied Aerodynamics Conference
    • Place of Presentation
      Sheraton New Orleans, New Orleans(AIAA2012-3128)
    • Year and Date
      20120625-28
  • [Presentation] Effects of Transient Aerodynamics on Vehicle Stability : A Large Eddy Simulation Analysis2012

    • Author(s)
      Cheng, S.Y., Tsubokura, M., Nakashima, T., Okada, Y., Nouzawa, T.
    • Organizer
      30th AIAA Applied Aerodynamics Conference
    • Place of Presentation
      Sheraton New Orleans, New Orleans(AIAA2012-3127)
    • Year and Date
      20120625-28
  • [Presentation] A Numerical Study of Transient Aerodynamics of Vehicles Subjected to Pitching Oscillation2012

    • Author(s)
      Tsubokura, M., Cheng, S.Y., Nakashima, T., Okada, Nouzawa, T.
    • Organizer
      9th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements
    • Place of Presentation
      Macedonia Palace Hotel, Thessaloniki, Greece(N0030)
    • Year and Date
      20120606-08
  • [Presentation] Unsteady vehicle aerodynamics during a dynamic steering action : 2nd report, Numerical analysis2012

    • Author(s)
      Tsubokura, M., Ikawa, Y., Okada, Y., Nakashima, T., Nouzawa, T.
    • Organizer
      2012 SAE World Congress
    • Place of Presentation
      Cobo Center, Detroit(2012-01-0448, pp.395-412)
    • Year and Date
      20120424-26
  • [Presentation] Unsteady vehicle aerodynamics during a dynamic steering action : 1st report, On-road analysis2012

    • Author(s)
      Okada, Y., Nouzawa, T., Okamoto, S., Fujita, T., Kamioka, T., Tsubokura, M.
    • Organizer
      2012 SAE World Congress
    • Place of Presentation
      Cobo Center, Detroit(2012-01-0446, pp.355-377)
    • Year and Date
      20120424-26
  • [Presentation] 自動車のホイール回転が車両空力に及ぼす影響に関するLES解析2012

    • Author(s)
      池田隼,坪倉誠,小林竜也,長谷川巧,小森谷徹
    • Organizer
      第26回数値流体力学シンポジウム
    • Place of Presentation
      国立オリンピック記念青少年総合センター(渋谷区)(D06-2)
    • Year and Date
      2012-12-19
  • [Presentation] High-Performance Computing Large-Eddy Simulation for Next-Generation Vehicle Aerodynamics2012

    • Author(s)
      Makoto Tsubokura
    • Organizer
      Korea-Japan CFD Workshop 2012
    • Place of Presentation
      Busan National Univ., Korea
    • Year and Date
      2012-11-23
  • [Presentation] 自動車実走行時に作用する空力減衰効果とその発生メカニズム2012

    • Author(s)
      チェンシユアン,坪倉誠,中島卓司,岡田義浩,農沢隆秀
    • Organizer
      日本流体力学会年会2012
    • Place of Presentation
      高知大学
    • Year and Date
      2012-09-16
  • [Presentation] Large Eddy Simulation on the Unsteady Aerodynamics of a Heavy Duty Truck in Wind Gust2011

    • Author(s)
      Makoto Tsubokura, Prasanjit Das, Tomofuyu Matsuuki, and Takuji Nakashima
    • Organizer
      Proceedings of ASME-JSME-KSME Joint Fluids Engineering Conference 2011
    • Place of Presentation
      ACT City Congress Center, Hamamatsu, Shizuoka, Japan(AJK2011-FED, AJK2011-23034)
    • Year and Date
      20110724-29
  • [Presentation] Development of an Unsteady Aerodynamic Simulator for Road Vehicle based on Large-Eddy Simulation2011

    • Author(s)
      Makoto Tsubokura, Takuji Nakashima
    • Organizer
      ASME-JSME-KSME Joint Fluids Engineering Conference 2011
    • Place of Presentation
      ACT City Congress Center, Hamamatsu, Japan(AJK2011-42010)
    • Year and Date
      20110724-29
  • [Presentation] Unsteady Aerodynamics Simulation of a Heavy Duty Truck in Wind Gusts Coupled with Vechicle Motion Analysis in Six Degrees of Freedom2011

    • Author(s)
      Takuji Nakashima, Makoto Tsubokura, Syumei Matsuda, and Yasuaki Doi
    • Organizer
      Proceedings of ASME-JSME-KSME Joint Fluids Engineering Conference 2011
    • Place of Presentation
      ACT City Center, Hamamatsu, Shizuoka, Japan(AJK2011-FED, AJK2011-23031)
    • Year and Date
      20110724-29
  • [Presentation] On the Aerodynamics of Ground Vehicles Subjected to Crosswind Gust and its Shape Dependence2011

    • Author(s)
      Makoto Tsubokura, Jun Ikeda, Takuji Nakashima, Kozo Kitoh, and Shinji Kitayama
    • Organizer
      29th AIAA Applied Aerodynamics Conference
    • Place of Presentation
      Sheraton Waikiki, Honolulu, Hawaii(AIAA2011-3670)
    • Year and Date
      20110627-30
  • [Presentation] Large Eddy Simulation of Flow past Road Vehicles Subjected to Pitching Oscillation2011

    • Author(s)
      Cheng Seeyuan, Makoto Tsubokura, Takuji Nakashima, Takahide Nouzawa, and Yoshihiro Okada
    • Organizer
      20th AIAA Computational Fluid Dynamics Conference
    • Place of Presentation
      Sheraton Waikiki, Honolulu, Hawaii(AIAA2011-3065)
    • Year and Date
      20110627-30
  • [Presentation] Coupled Analysis of Unsteady Aerodynamics and 6DoF Motion of a Heavy Duty Truck in Stonrg Wing Gusts2011

    • Author(s)
      Takuji Nakashima, Makoto Tsubokura, Syumei Matsuda, and Yasuaki Doi
    • Organizer
      29th AIAA Applied Aerodynamics Conference
    • Place of Presentation
      Shearaton Waikiki, Honolulu, Hawaii(AIAA2011-3672)
    • Year and Date
      20110627-30
  • [Presentation] 蛇行する自動車に作用する非定常空力応答に関するLES解析2011

    • Author(s)
      池田隼,坪倉誠,伊川雄希,中島卓司,農沢隆秀,岡田義浩
    • Organizer
      第25回数値流体力学シンポジウム
    • Place of Presentation
      大阪大学コンベンションセンター(A05-2)
    • Year and Date
      2011-12-19
  • [Remarks]

    • URL

      http://www.eng.hokudai.ac.jp/labo/fluid/aero/

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Published: 2015-07-16  

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