静止流体中の回転円板上乱流境界層

概要

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An experimental study of the turbulent flow due to a rotating disk in an infinite quiescent fluid was conducted. Using a single normal- or inclined-type hot wire, mean velocities and all the six components of the Reynolds stress were measured for various local Reynolds numbers Re_L. The circumferential velocity profiles, normalized by the wall variables, in the semilogarithmic plot show a linear variation in the fully turbulent region. When Re_L=1.0×10^6, this profile is in close agreement with that for the flat-plate boundary layer. The circumferential component of the turbulence intensity reaches a maximum value in the buffer region. All components of the turbulence intensity, normalized by the friction velocity, were found to be considerably smaller than those for the flat-plate boundary layer except very near the wall. The values of the structure parameter a_1 are smaller than those for the flat-plate boundary layer.
一般社団法人日本機械学会の論文
1992-01-25