Numerical calculation of local resistance coefficient  of cylindrical tube with sudden shrinkage
LIU Lili1, 2, YANG Hanxiao1, 2, WANG Qing3, TAO Congying1, 2, Hong Li1, 2
College Physics . 2026, (2): 23 .  DOI: 10.16854/j.cnki.1000-0712. 250320