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Numerical study of liquid mixing in microalgae-farming tanks with baffles

机译：带挡板的微藻养殖池内液体混合的数值研究

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摘要

One possible renewable energy source is microalgal biomass, representing sunlight-driven cell factories. Experimental studies have shown that a uniform mixture of microalgae is required for their access to sunlight. Generally, running paddlewheels for raceway ponds and mechanical pumps for photobioreactors are used, and their electricity consumption increases the costs of algae-mediated biodiesel production. To reduce the consumption of electricity, we developed the idea of using a floating automatic mix system based on the mixing nature of liquid sloshing in a baffled tank floating in the ocean. When oscillatory water waves induce liquid sloshing in the tank, vortices form and shedding is generated by horizontal baffles installed in the tank. Wave motions may be employed to enhance the mixing of microalgae in the tank and dramatically reduce the electricity consumption that is required in traditional algae-mediated biodiesel production. The vortex generation of sloshing liquids in a tank with horizontal baffles was numerically and experimentally investigated in this study. The effects of baffle location and length were systematically studied.
机译：一种可能的可再生能源是微藻生物质，代表了阳光驱动的细胞工厂。实验研究表明，微藻类需要均匀的混合物才能获得阳光。通常，使用用于跑道池的运行桨叶和用于光生物反应器的机械泵，它们的电力消耗增加了藻类介导的生物柴油生产的成本。为了减少电力消耗，我们根据漂浮在海洋中的带挡板的水箱中液体晃动的混合特性，开发了使用浮动自动混合系统的想法。当振荡的水波在水箱中引起液体晃动时，会形成涡流，安装在水箱中的水平挡板会产生脱落。可以采用波动来增强罐中微藻的混合，并显着减少传统藻类介导的生物柴油生产所需的电力消耗。在这项研究中，通过数值和实验研究了带有水平挡板的水箱中晃荡液体的涡流产生。系统研究了挡板位置和长度的影响。

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  • 来源
    《Ocean Engineering》 |2018年第1期|168-186|共19页
  • 作者

    Chen Bang-Fuh; Yang Hung-Kai; Wu Chih-Hua; Lee Tzu-Chiang; Chen Bing;

  • 作者单位

    Natl Sun Yat Sen Univ, Dept Marine Environm & Engn, Kaohsiung, Taiwan;

    Natl Sun Yat Sen Univ, Dept Marine Environm & Engn, Kaohsiung, Taiwan;

    Natl Sun Yat Sen Univ, Dept Marine Environm & Engn, Kaohsiung, Taiwan;

    Natl Sun Yat Sen Univ, Dept Marine Environm & Engn, Kaohsiung, Taiwan;

    Dalian Univ Technol, Sch Ocean Sci & Technol, Dalian, Peoples R China;

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