Numerical Simulation of Radiation Transport to Improve Microalgae Cultivation in an Air-Lift Photobioreactor

作     者：ZHANG Xianbin LI Mingjia HUNG Tzuchen ZHANG Zixun 

作者机构：Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of EducationSchool of Energy and Power EngineeringXi'an Jiaotong University School of Mechanical EngineeringBeijing Institute of Technology Department of Mechanical EngineeringTaipei University of Technology 

出 版 物：《Journal of Thermal Science》 (热科学学报(英文版))

年 卷 期：2025年第34卷第1期

页      面：62-76页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：supported by Major Program of the National Natural Science Foundation of China (No. 52293413) the National Natural Science Foundation of China (No.52076161) 

主　　题：light distribution particle tracking photobioreactor structure optimization 

摘      要：A comprehensive numerical model is developed to simulate the growth of microalgae under light/dark cycling *** purpose of this study is to predict the growth rate of Chlorella vulgaris cultivated in photobioreactors(PBRs) in order to improve the light conditions for microalgae and enhance the photosynthetic *** fluid dynamics(CFD) is used to simulate its internal hydrodynamic *** Lagrangian method is employed to track the movement of microalgae *** radiative transfer equation(RTE)is used to obtain light intensity *** combination of light radiation field and microalgae cell motions is used to construct the light history and they are integrated into the model of the photosynthetic units(PSU) to calculate the microalgae growth *** numerical results demonstrate that enhanced light/dark cycling frequency with ordered mixing can promote efficient microalgae *** effect of the vortex flow field generated by the baffles in an air-lift PBR is analyzed for increasing microalgae growth *** using the 1:1 baffle spacing,the biomass production of microalgae is increased by 41.8% compared to the original PBR.