Direct numerical simulation of turbulent mixing layers with periodic forcing induced inflow

Yukinori Kametani, Masayuki Kawagoe, Koji Fukagata

研究成果: Conference contribution

抜粋

The direct numerical simulation of the turbulent mixing layer with periodically-forced inflow is performed. The angular frequency ωc was set as a control parameter. To compare the experimental study of Naka et al. (2010), the angular frequency is set to be ω = 0.83 (Case A) and 3.85 (Case B). In the present simulation, the momentum thickness shows the Case A achieved the mixing enhancement, while Case B achieves its suppression. Due to the both controls, the Reynolds normal shear stress, especially vv increases behind the periodic forcing. The Reynolds shear stress uv is suppressed in the Case B at downstream. This region is agree with that the mixing suppression is found in the momentum thickness. Furthermore, the anisotropic tensor indicates that two dimensional large coherent structure is generated in the Case B in which mixing was suppressed.

元の言語English
ホスト出版物のタイトルInternational Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013
出版者TSFP-8
3
ISBN(電子版)9780000000002
出版物ステータスPublished - 2013 1 1
イベント8th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013 - Poitiers, France
継続期間: 2013 8 282013 8 30

Other

Other8th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013
France
Poitiers
期間13/8/2813/8/30

    フィンガープリント

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

これを引用

Kametani, Y., Kawagoe, M., & Fukagata, K. (2013). Direct numerical simulation of turbulent mixing layers with periodic forcing induced inflow. : International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013 (巻 3). TSFP-8.