平面上の正方形状突起に沿う乱流境界層内の二次流れの挙動

概要

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This paper presents an experimental investigation of the turbulent boundary layer flow along rows of streamwise square ribs on a plane surface for various spacings of rows. The spacing between the centers of two adjoining square ribs was varied at S/D=2,3,4,5,7 and ∞, i.e., a single square rib. The time-mean velocity was measured by the Pitot and static pressure tubes. The turbulence intensities and auto-correlation were obtained using the data processing system and the F.F.T. analyzer connected to a hot wire anemometer. The Velocity vectors of secondary flow were measured by LDV. As a main result, the secondary flow becomes offset as the spacing between two ribs becomes small, since the directions of the secondary flow near the edges between the marked rib and the adjoining rib are opposite
一般社団法人日本機械学会の論文
1995-02-25