The analysis of a chaotic mixing method with a Taylor vortex flow and the possibility to a blood filtration system and a photo-bioreactor.

混沌混合方法及其在固-液多相流过滤系统中的应用垂直边界附近的刚性边界层(Ekman边界层)下，在长宽比(Γ)为1.0时，半径比(η)为0.375处，出现了带有超小涡量的主涡模式。在湍流区域内，即使在20,000的高雷诺数(Re)范围内，该旋涡仍保持其原始形状。在Γ=3，η=0.375的过滤系统中，使用的是尼龙颗粒(平均直径约80μm，比重为1.2时)，当Re=0时，大部分颗粒在几分钟内聚集在过滤器表面，但随着旋转Re的增加，压降保持在较低的水平。这一事实表明，对降低过滤过程的压降有明显的效果。然而，气流的脉动吸力有时会导致过滤过程的不稳定，这一点目前还不清楚。微生物…的培养由于在工程实验室中很难直接使用血细胞，因此采用了相似的植物光合作用微生物，在Γ=1的条件下研究了泰勒涡对培养的流体力学效应。至于实际尺寸，分别选择了内筒直径为28 mm和外筒直径为75 mm。培育时间约为十天。结果表明，比生长速率(P)随Re的增加而增大。但在非常有限的6,000；Re&lt；8,250点区域，μ走势陡峭，之后转向8,250；Re&lt；9600点的大幅下跌。在Re&gt；9600中，μ再次以一条平缓的梯度曲线增加。P在Re=8250时出现最大值，但在Re=18000时不变相同的值，但在Re=18000和Re=8250时沉降速率相同。这一事实表明，两种雷诺数之间的流动结构不同。用超声多普勒仪测量的流型表明，在Re=8000和26000之间，平均速度分布有很大不同。在Re=26000的流动中，底部有一个涡，底部有一个额外的涡，而在上、下两个区都有成对的涡。这种差异会影响比增长率。在该反应器中，螺旋藻可以存活到Re=40000，不受分流的干扰。较少

Chaotic mixing method and its application to the filtration system for solid-1iquid multipnase flowThe main vortex mode with the extra smaller vortex has occurred at the aspect ratio (Γ) of 1.0 and the radius ratio(η)of 0.375 under the rigid boundary layer (Ekman boundary layer), which exists near the vertical boundary ends. This vortex keeps its original shape even in the high Reynolds number (Re) of 20,000 in the region of the turbulence. In the filtration system with Γ=3 and η=0.375, the nylon particle (mean diameter is about 80 μm and the specific gravity of 1.2) is used, and at Re=0, most particle is accumulated on the filter surface in a few minutes, but the pressure drop is confirmed to keep in lower level when the rotating Re is increased. This fact shows the clear effect on reducing the pressure drop of the filtration process. However, the pulsating suction of the flow would sometimes cause the instability in filtration, which is not clarified yet.Cultivation of microorganism … More With Taylor vortex flowSince it is difficult to use a blood cell directly in the engineering laboratory, the similar vegetable photosynthesis microorganisms are used and the fluid dynamic effect on cultivation by the Taylor vortex is investigated at Γ=1. As for the actual size, the diameter of the inner cylinder is 28mm, and the one of the outer 75mm, are selected respectively. The cultivation time is about ten days. As the result, a specific growth rate (p) increases with the increase of Re. But in the very limited region of 6000<Re<8250, μ takes a steep sloop, and after then, it turns to sharp decline in 8250<Re<9600. In Re>9600, μ increases again with a gentle gradient curve. p shows the maximum value at Re=8250, but not becomes the same value at Re=18000, although the sedimentation rate is same at Re=18000 as Re=8250. This fact indicates the flow structure is different between both Reynolds numbers. This flow pattern is measured using Ultrasound Doppler Profiler and shows the averaged velocity profiles are quite different between Re=8000 and 26000. Each flow is more turbulent, but it is well observed that the flow at Re=8000 has one vortex with an extra vortex in the bottom region and the one at Re=26000 has pair vortices in upper and lower regions. This difference would influence the specific growth rate. In this reactor, Spirulina is alive until Re=40000 without disturbing from the share flow. Less