Turbulent Flows in Entrance Region of Two-dimensional Straight Channel with Inlet Disturbance

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概要

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• Development of time mean quantities and Reynolds sresses in a two-dimensional straight channel was measured under various inlet disturbance conditionns and decay process of both time mean and turbulence fields was examined. The decay of disturbance of time mean quantities occurs much faster than those of turbulence. Change of the Reynolds stresses in the wall region is especially slow and it requires more than seventy channel widths to attain the fully developed conditions. Development is not monotonic but has an overshooting characteristic. The Reynolds stresses normalized by the local kinetic energy of turbulence are found nearly uniform over a wide region of the test channel.

• 一般社団法人日本機械学会の論文

著者

• Yoshino Yutaka

  Toshiba Corporation

• Masuda Shigeaki

  Department Of Mechanical Engineering Keio University

• Ariga Ichiro

  Department Of Mechanical Engineering Keio University

• KOBATA Tadashi

  Japan Air Lines Ltd.

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• Turbulent Flows in Entrance Region of Two-dimensional Straight Channel with Inlet Disturbance

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