AUTHOR=Huang Xiaoli , Ge Liang , Gui Nan , Yang X. T. , Tu J. Y. , Jiang S. Y. TITLE=Corrigendum: Numerical Study on Discharging Characteristics of Entangled Cluster of Particles in Particle Bed JOURNAL=Frontiers in Energy Research VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.817360 DOI=10.3389/fenrg.2021.817360 ISSN=2296-598X