生物対流の制御に関する数値解析 : 第1報,基礎特性と表面酸素濃度の周期的変動が及ぼす影響(流体工学,流体機械)

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The two-dimensional bioconvections in a rectangular chamber have been studied numerically, In this study, our main attention was paid to the behaviors in a large r region and the influence. ofthe periodic change of the surface oxygen concentration, where, r is analogous to the RayleIgh number in thermal convection, The calculation results are summarized as follows, (1) The mcrease in r has an effect to increase the number of plume, (2) In the large r region, we can find the chaoticbehavior near the side walL (3) The periodic oscillation of the surface oxygen concentration has an effect to increase the inequality in the distribution of the bacteria concentration, Moreover, wecan find the existence of the optimum frequency for the enhancement of the inequality in the distribution of the bacteria concentration.
社団法人日本機械学会の論文
2007-09-25