乱流境界層と円形壁面噴流の三次元渥含に関する実験

概要

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Measurements are presented of the mean flow and turbulence properties of threedimensional wall jets injected form a circular nozzle located adjacent to a wall into the turbulent boundary layers, with and without or adverse pressure gradient and a quiescent fluid. The maximum velocities of the wall jets in the boundary layers decrease more slowly toward downstream than in the quiescent fluid, and also these inverse values grow not linearly with the axial distance. The half-widths in the normal and spanwise directions to the wall, L_y and L_z, are considerably small in the wall jets injected into the boundary layers in comparison with those into the quiescent fluid. The variations of the maximum turbulent intensities are discussed in connection with those of twodimensional wall jets, with and without wall flow. The patterns of the isopleths of the mean velocity and turbulent intensity are exhibited.
一般社団法人日本機械学会の論文
1986-02-25