2球間クエット流の遷移過程における変動の消滅現象について

概要

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In this study, we have considered a reverse transition phenomenon, i.e., the disappearance of velocity fluctuation in the laminar-turbulent transition of spherical Couette flow with only the inner sphere rotating. This phenomenon occurs within a limited clearance ratio region around 0.14, where the rotating disk type's disturbances, such as Stuart vortex, ring vortex and shear waves, can appear simultaneously with the rotating cylinder type's disturbances such as spiral Taylor-Gortler vortex and travelling waves. When the reverse transition occurs with an increase of Reynolds number, the damping of fluctuating velocities begins in the order of u, v and w, where u, v and w are the fluctuating velocity components of azimuthal, radial and meridian direction, respectively. The R. M. S. values of v and w are larger than that of u for the case of travelling waves.
一般社団法人日本機械学会の論文
1992-07-25