Research on domino effect modeling of multiple fires is abundant. Most studies have observed a higher propagation probability of domino effect based on the superposition principle of thermal radiation. Chen et al. developed a numerical simulation on the thermal response of diesel dome tanks under the coupling effects of double-pool fire. The simulation results show that the coupling effects of two pool fires generated by two adjacent 5000m 3 diesel tanks can lead to the generation of carbon black and the increase of flame height, resulting in stronger thermal radiation to adjacent tanks. Their follow-up study developed a computational fluid dynamicsbased to model the coupling effect of double pool fires. Simulation results indicated that double pool fires greatly increased the radiation heat flux received by the target storage tank in the downwind direction, resulting in the significant aggravation of accident escalation. In addition, the limitations of the traditional superposition method were discussed. Since the mutual influence between fire zones is ignored, the traditional superposition method underestimates the heat radiation.