リケラボ論文検索は、全国の大学リポジトリにある学位論文・教授論文を一括検索できる論文検索サービスです。

リケラボ 全国の大学リポジトリにある学位論文・教授論文を一括検索するならリケラボ論文検索大学・研究所にある論文を検索できる

リケラボ 全国の大学リポジトリにある学位論文・教授論文を一括検索するならリケラボ論文検索大学・研究所にある論文を検索できる

大学・研究所にある論文を検索できる 「Influence of small wavy roughness on flat plate boundary layer natural transition」の論文概要。リケラボ論文検索は、全国の大学リポジトリにある学位論文・教授論文を一括検索できる論文検索サービスです。
リケラボ

コピーが完了しました

URLをコピーしました

論文の公開元へ論文の公開元へ
書き出し

Influence of small wavy roughness on flat plate boundary layer natural transition

Hiroki TAMEIKE Aiko YAKENO Shigeru OBAYASHI 東北大学 DOI:10.1299/jfst.2021jfst0008

2021.01.01

概要

One of the efiective ways to reduce viscous drag around an airfoil is by delaying the boundary layer transition. In this study, we analyzed the influence of a small wavy roughness on a two-dimensional, natural boundary layer transition, using direct numerical simulation that resolved each small roughness. A parametric study was conducted on the wavy roughness wavelength. Our results show that in some cases the transition delays whose characteristics depend on the roughness wavelength. In a detailed analysis, we found that the wavy roughness firstly affects the process of primary vortex growth, Tollmien-Schlichting (TS) instability. In addition, we found that the secondary vortex pairing also depended on it. In the most transition-delayed cases, the roughness wavelength was different far from the TS instability one, and the vortex pairing occurred firstly in upstream however not much in downstream, keeping the vortex size is kept small.

論文の公開元へ

関連論文

関連論文をもっと見る

参考文献

Chi-Wang, S., and Osher, S., Efficient Implementation of Essentially Non-oscillatory Shock Capturing Schemes, Journal of Computational Physics, Vol. 77 (1988), pp.439-471.

Gaitonde, D. V. and Visbal, M. R., Padé-Type Higher-Order Boundary Filters for the Navier-Stokes Equations, AIAA journal, Vol. 38, No. 11 (2000), pp.2103-2112.

Gaster, M., On the effects of boundary-layer growth on flow stability, Journal of Fluid Mechanics, Vol. 66, Issue 3 (1974), pp.465-480.

Japan Aerospace Exploration Agency, Research and development of aviation environment technology (online), available from < http://www.jaxa.jp/press/2018/12/files/20181204_research02.pdf> , (accessed on 24 February, 2020).

Kawai, S. and Fujii, K., Compact Scheme with Filtering for Large-Eddy Simulation of Transitional Boundary Layer, AIAA journal, Vol. 46, No. 3 (2008), pp.690-670.

Kikuchi, S., Shimoji, M., Watanabe, H., and Kohama, Y., Control of Bypass Transition for Textile Surface, JSME International Journal, Vol. 47, No. 4 (2004), pp.777-785.

Kobayashi, M., and Asai, M., Experimental investigation of sound generation by a protuberance in a laminar boundary layer, Tokyo Metropolitan University, Ph. D. thesis (2015), (in Japanese).

Lele, S.K., Compact Finite Difference Schemes with Spectral-like Resolution, Journal of Computational Physics, Vol. 103 (1992), pp.16-42.

Ma’mum, M. D., Asai, M., and Inasawa, A., Effects of surface corrugation on the stability of a zero-pressure-gradient boundary layer, Journal of Fluid Mechanics, Vol. 741, pp. 228-251.

Oguri, E., and Kohama, Y., Drag Reduction by Micro-Sized Distributed Surface Geometry on a Flat Plate, Transactions of the JSME (in Japanese), Vol. 62, No. 597 (1996), pp.1754-1761.

Oguri, E., and Kohama, Y., Control of Turbulent Transition using Fiber Surface in Flat Plate Boundary Layer, Transactions of the JSME (in Japanese), Vol. 64, No. 625 (1998), pp.2942-2949.

Saric, W.S. and A. H. Nayfeh, Nonparallel stability of boundary-layer flows, The physics of Fluids, Vol. 18, Issue 8 (1975), pp.945.

Tani, I., Drag Reduction by Riblet Viewed as Roughness Problem, Proc. Japan Academy, Series B, Vol. 64, Issue 2 (1988), pp.21- 24.

The Ministry of Land, Infrastructure and Transport, Trends in international air passenger demand (online), available from < https://www.mlit.go.jp/singikai/koutusin/koku/07_9/01.pdf> , (accessed on 22 February, 2020).

Yakeno, A., Hasegawa, Y. and Kasagi, N., Modification of quasi-streamwise vortical structure in a drag-reduced turbulent channel flow with spanwise wall oscillation, Physics of Fluids, Vol. 26, No. 8 (2014), pp. 085109

Walsh, M. J., Drag Characteristics of V-Groove and Transverse Curvature Riblets, AIAA Journal, Vol. 30, No. 4 (1992), pp.1119-1122.

参考文献をもっと見る