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首页> 外文期刊>Acta Horticulturae >Modeling of biomass productivity in dense microalgal culture using computational fluid dynamics
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Modeling of biomass productivity in dense microalgal culture using computational fluid dynamics

机译：使用计算流体动力学建模致密微藻培养中的生物质生产率

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摘要

Biomass productivity is the variable to optimize in microalgal processes ana is strongly related to light availability inside the photobioreactor. The so-called "light regime" in dense microalgal cultures is the result of the movement of microalgal cells inside the irradiance field caused by the stirring of the culture. Proper mixing increases productivity and helps microalgal cells to move frequently between dark and light zones but it is not trivial to ascertain the adequate level of mixing for a particular microalgal strain and culture system. Computational Fluid Dynamics (CFD) allows a precise description of the irradiance field inside a microalgal culture and makes it possible to calculate the movement of a population of single cells as a function of geometry and mixing intensity. Thus, realistic light-time patterns can be obtained and their effects on the photosynthetic response of microalgae can be analysed. In this work, we present the analysis of an actual horizontal tubular photobioreactor whose mixing patterns are obtained by CFD and are coupled with a dynamic model of photosynthesis for Nannochloropsis gaditana to determine biomass productivity. This data is compared to the experimental data of biomass productivity obtained in the samephotobioreactor to show that the model developed agrees with the experimental results within a 20% error margin.
机译：生物质生产率是在微藻过程中优化的变量，ANA与光生物反应器内的光可用性强烈相关。致密微藻培养物中所谓的“轻质制度”是通过培养培养引起的辐照度场内的微藻细胞运动的结果。适当的混合增加了生产率，并有助于微藻细胞经常在暗和光区之间移动，但是确定对特定微藻菌株和培养系统的充分混合水平并不重要。计算流体动力学（CFD）允许精确描述微藻培养内的辐照度场，并且可以根据几何和混合强度计算单个电池群的运动。因此，可以获得现实的光时间模式，并且可以分析它们对微藻的光合响应的影响。在这项工作中，我们介绍了通过CFD获得的混合模式的实际水平管状光生物反应器的分析，并与Nannchloropsis Gaditana的光合作用的动态模型相结合，以确定生物质生产率。将该数据与SamephotBioreActor中获得的生物量生产率的实验数据进行比较，以表明该模型在20％误差范围内开发了实验结果。

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