G111 空間的に周期的な定常流によるカオス混合

概要

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The chaotic mixing of fluids due to a slow flow in a spatially periodic system called the partitioned-pipe mixer is studied. This system, originally composed of alternate horizontal and vertical plates of the same length in a duct, is generalized so that the ratio α of the lengths of these plates or the angle φ between neighboring plates can be changed. Using the Poincare plots of the locations of fluid particles after every period, we find that the mixing performance in long periods can be improved by choosing appropriate values of α or φ. Furthermore, it is shown that the mixing performance in a short period can be estimated from the distribution of the lines of separation, defined by the initial locations of fluid particles which arrive at one of the plates within this period, and that this performance also can be improved by the above generalization.
日本流体力学会の論文
2001-07-31