Experiments on Three-dimensional Mixing of a Wall Jet with a Turbulent Boundary Layer

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概要

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• Measurements are made for the mean flow and turbulence properties of a three-dimensional wall jet issued from a circular nozzle adjacent to a wall into a turbulent boundary layer with or without an adverse pressure gradient, and into a quiescent fluid. The maximum velocity of the wall jet in the boundary layer decreases more slowly in the downstream direction than in the quiescent fluid, and these inverse values do not grow linearly with the axial distance. The half-widths in the normal and spanwise directions in relation to the wall, L_y and L_z, are considerably smaller in the wall jet injected into the boundary layer than in the one into the quiescent fluid. The variation of the maximum turbulent intensity is discussed in connection with those of two-dimensional wall jets with and without a wall flow. The patterns of the isopleths of the mean velocity and turbulent intensity are given.

• 一般社団法人日本機械学会の論文

著者

• YAMASHITA Shintaro

  Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, Nati

• NAKAMURA Ikuo

  Department of Mechanical Engineering, Nagoya University

• Nakamura I

  Department Of Mechanical Engineering Nagoya University

• Nakamura Ikuo

  Nagoya University

• Yamashita Shintaro

  Department Of Mechanical Engineering Nagoya University

• Nakamura I

  Nagoya Univ. Nagoya

• Nakamura I

  Chiba Univ. Chiba Jpn

• YAMADA Hiroya

  Daido Institute of Technology

• YANO Haruhisa

  Daido Institute of Technology

• Yamashita S

  Graduate School Of Engineering Hokkaido University

• Nakamura Ikuo

  Department Of Applied Physics Faculty Of Engineering University Of Tokyo

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