Numerical Simulation Analysis Based on the Study of the Slag discharge Mechanism of the Triangular-shaped Drill PipeDayong Tang, Yi Tang, Zhengyong Duan, Wannian Lei, Xiaolong He and Fubing ZhangE3S Web Conf., 257 (2021) 03076DOI: https://doi.org/10.1051/e3sconf/202125703076