或者采用交错式锥形挡板产生旋流流场，以提高养殖池中的微藻生产力。
Alternatively permutated conic baffles generate vortex flow field to improve microalgal productivity in a raceway pond.
机构信息
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
出版信息
Bioresour Technol. 2018 Feb;249:212-218. doi: 10.1016/j.biortech.2017.10.031. Epub 2017 Oct 10.
Alternatively permutated conic (APC) baffles were proposed to generate vertical and horizontal vortex flow to intensify mixing and mass transfer in a raceway pond. Both clockwise vortexes were generated before and after conic baffles in the main stream to increase perpendicular velocity by 40.3% and vorticity magnitude by 1.7 times on vertical cross section. Self-rotary flow around conic baffles and vortex flow among conic baffles were generated to increase perpendicular velocity by 80.4% and vorticity magnitude by 4.2 times on horizontal cross section. The bubble generation time and diameter decreased by 25.5% and 38.7%, respectively, while bubble residence time increased by 84.3%. The solution mixing time decreased by 48.1% and mass transfer coefficient increased by 34.0% with optimized relative spacing (ε) and height (ω) of conic baffles. The biomass productivity of Spirulina increased by 39.6% under pure CO with APC baffles in a raceway pond.
替代排列的锥形（APC）挡板被提出用于产生垂直和水平涡旋流，以强化养殖池中的混合和传质。在主流中的锥形挡板前后均产生顺时针涡旋，以增加垂直截面的垂直速度 40.3%，涡度大小增加 1.7 倍。锥形挡板周围的自旋转流和锥形挡板之间的涡旋流增加了水平截面的垂直速度 80.4%，涡度大小增加了 4.2 倍。气泡生成时间和直径分别减少了 25.5%和 38.7%，而气泡停留时间增加了 84.3%。优化了锥形挡板的相对间距（ε）和高度（ω）后，溶液混合时间减少了 48.1%，传质系数增加了 34.0%。在养殖池中使用 APC 挡板，螺旋藻的生物量生产率在纯 CO 下提高了 39.6%。
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