Study on effects of surface roughness on the boundary-layer instability for accurate transition prediction

• Project/Area Number: 21560820
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: ASAI Masahito 首都大学東京, 大学院・システムデザイン研究科, 教授 (00117988)
• Co-Investigator(Kenkyū-buntansha): INASAWA Ayumu 首都大学東京, 大学院・システムデザイン研究科, 助教 (70404936)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 流れの安定性 / 乱流遷移 / 境界層 / 壁面粗さ / 境界層遷移 / 壁面せん断流 / トルミーン・シュリヒティング波動

Research Abstract

Effects of 2D and 3D surface corrugation with roughness Reynolds numbers less than 5 on the growth of T-S waves were examined experimentally in a zero-pressure-gradient boundary layer. A distinct difference was found in the destabilizing effect between 2D and 3D corrugations. 2D surface corrugation promotes the growth of T-S waves significantly, while the destabilizing effect of 3D corrugation is much weaker than that of 2D corrugation. Destabilizing effects of surface corrugation were also examined both experimentally and numerically in plane Poiseuille flow.

Research Products

• [Journal Article] On the transition between distributed and isolated surface roughness and its effect on the stability of channel flow (2011)
  • Author(s): Floryan J. M. and Asai M.
  • Journal Title: Physics of Fluids Volume: vol.23 Issue: 10 Pages: 104101-104101
  • DOI: 10.1063/1.3644694
  • Peer Reviewed
• [Journal Article] 壁面粗さを有するチャネル流の安定性に関する数値実験 (2010)
  • Author(s): 稲澤歩, Floryan J. M.,浅井雅人
  • Journal Title: 宇宙航空研究開発機構特別資料
  • NAID: 120006828363
  • Peer Reviewed
• [Journal Article] Certain aspect of instability of flow in a channel with expansion/contraction (2010)
  • Author(s): Inasawa A, Asai M and Floryan J. M.
  • Journal Title: IUTAM Book Series, Laminar-Turbulent Transition Volume: Vol.18 Pages: 501-504
  • Peer Reviewed
• [Journal Article] Certain aspect of instability of flow in a channel with expansion/contraction (2010)
  • Author(s): Inasawa, A, Asai, M, Floryan, J.M.
  • Journal Title: IUTAM Bookseries, Seventh IUTAM Symposium on Laminar-Turbulent Transition 18 Pages: 501-504
  • Peer Reviewed
• [Presentation] Influences of surface roughness on boundary-layer instability and transition (2011)
  • Author(s): Mamun M. D. Shigeta M., Asai M. and Inasawa A.
  • Organizer: 日本流体力学会年会2011
  • Place of Presentation: 東京
  • Year and Date: 2011-09-08
• [Presentation] 境界層の安定性に対する壁面粗さの影響 (2011)
  • Author(s): 浅井雅人,滋田雅洋,稲澤歩
  • Organizer: 日本航空宇宙学会第42期年会講演会
  • Place of Presentation: 東京
  • Year and Date: 2011-04-14
• [Presentation] Effects of roughness on the stability of wall-bounded shear flows (2010)
  • Author(s): Asai M.
  • Organizer: 13th Asian Congress of Fluid Mechanics
  • Place of Presentation: Bangladesh
  • Year and Date: 2010-12-21
• [Presentation] The influence of change in surface geometry on the stability of flow in a channel (2010)
  • Author(s): Inasawa A., Asai M. and Floryan J. M.
  • Organizer: Euromech Fluid Mechnics Conference 8
  • Place of Presentation: Germany
  • Year and Date: 2010-12-21
• [Presentation] Effects of roughness on the stability of wall-bounded shear flows (2010)
  • Author(s): Asai, M.
  • Organizer: 13th Asian Congress of Fluid Mechanics
  • Place of Presentation: Dhaka, Bangladesh
  • Year and Date: 2010-12-21
• [Presentation] The influence of change in surface geometry on the stability of flow in a channel (2010)
  • Author(s): Inasawa, A., Asai, M., Floryan, J.M.
  • Organizer: Euromech Fluid Mechnics Conference 8
  • Place of Presentation: German
  • Year and Date: 2010-12-21
• [Presentation] 微小振幅波状壁上に発達する境界層の安定性に関する研究 (2010)
  • Author(s): 滋田雅洋,浅井雅人,稲澤歩
  • Organizer: 日本流体力学会年会2010
  • Place of Presentation: 札幌
  • Year and Date: 2010-09-11
• [Presentation] 壁面せん断流の安定性に対する矩形状分布壁面粗さの影響 (2010)
  • Author(s): 浅井雅人, 鈴木広幸, 稲澤歩
  • Organizer: 日本機械学会年次大会講演会
  • Place of Presentation: 名古屋
  • Year and Date: 2010-09-10
• [Presentation] 壁面せん断流の安定性に対する矩形状分布壁面粗さの影響 (2010)
  • Author(s): 浅井雅人,鈴木広幸,稲澤歩
  • Organizer: 日本機械学会年次大会講演会
  • Place of Presentation: 札幌
  • Year and Date: 2010-09-08
• [Presentation] 波状壁面上の境界層の安定性に関する実験的研究 (2009)
  • Author(s): 滋田雅洋,飯島芳之,浅井雅人,稲澤歩
  • Organizer: 第58回理論応用力学講演会
  • Place of Presentation: 東京
• [Presentation] 波状壁面上の境界層の安定性に関する実験的研究 (2009)
  • Author(s): 滋田雅洋, 飯島芳之, 淺井雅人, 稲澤歩
  • Organizer: 第58回理論応用力学講演会
  • Place of Presentation: 日本学術会議 (東京)