テイラー渦流れの変異モード発生機構に関する数値的研究 : 内円筒回転角加速度の影響

概要

論文の詳細を見る
Two-dimensional numerical simulations of Taylor vortex flows considering acceleration rates of the inner cylinder were conducted to clarify the generating mechanisms of the primary, the secondary normal and the anomalous modes. We found that higher acceleration rates produce such strong vorticity for the cells on the end walls that a larger number of cells are induced toward the center. Slower increasing rates of the Re number promote diffusion of vorticity into the center of the cylinder. The modes are determined by the balance between induction and diffusion of the vorticity. The end cells degenerate in anomalous modes with certain acceleration rates. These weakened small cells are called "extra" or "hidden" vortices. We show that the extra vortices are end vortices which have become unstable and dissipate.
一般社団法人日本機械学会の論文
1992-11-25