Comparative Study on Flow Characteristics of Pipeline System Based on CFD Hou Yingzhe, Wu Hao, Yan Xiaozhe, Zhu Haoqiang, Gao Haitao, Hu Yiming, Cui Qiguan, Xiong Jinying and Zhou Longyu E3S Web Conf., 252 (2021) 02053 Published online: 23 April 2021 DOI: 10.1051/e3sconf/202125202053