Instability of Boundary Layer on Two-dimensional Corrugation with Various Wavelengths

• MA'MUN Mochamad Dady

  Department of Aerospace Engineering, Tokyo Metropolitan University

• ASAI Masahito

  Department of Aerospace Engineering, Tokyo Metropolitan University

• INASAWA Ayumu

  Department of Aerospace Engineering, Tokyo Metropolitan University

抄録

The instability of the boundary layer on two-dimensional (2-D) surface corrugation was examined experimentally. The corrugation amplitude A_w was one order of magnitude smaller than the displacement thickness of the boundary layer. Sinusoidal-geometry corrugations with various wavelengths were considered to see how the growth of Tollmien-Schlichting (T-S) waves was affected by the scale of corrugation. The corrugation wavelength λ_w ranged from about one-tenth to the same order as the T-S wavelength. The destabilizing effect of the 2-D corrugation was observed for a wide range of corrugation wavelengths and was not strongly dependent on the wavelength. Even when a separation bubble was formed in each furrow for the smallest wavelength, the amplification of T-S waves was almost the same as in the case of longer wavelengths.

収録刊行物

• TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

  TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 58 (3), 156-162, 2015

  一般社団法人 日本航空宇宙学会

キーワード

• Boundary Layer
• Instability
• Tollmien-Schlichting Waves
• Roughness

詳細情報

• CRID: 1390001204079509248
• NII論文ID: 130005066816
• DOI: 10.2322/tjsass.58.156
• ISSN: 21894205
• ISSN: 05493811
• Web Site: https://www.jstage.jst.go.jp/article/tjsass/58/3/58_T-14-59/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可