Original ResearchPublished 23 September 2026Investigation on flow and heat transfer characteristics of the once-through cooling system in a nuclear power plant under cold source disturbanceXiangyuan Meng · Qian Huang · Yifan Zhi · Yazhuo Zhao · Rongyong Zhang · Huimin WeiFrontiers in Energy Researchdoi 10.3389/fenrg.2026.1925174