Study on Side-entering Agitator Flow Field Simulation in Large Scale Biogas DigesterLi Xinxin, Cao Yadong, Huang Zhenfeng, Liang Jingfu, Cheng Gang and Pan RuiMATEC Web Conf., 153 (2018) 05003DOI: https://doi.org/10.1051/matecconf/201815305003