The paper presents the results of modeling an L4 experiment using an ACE test facility (USA) on the interaction of the melt with concrete. The study aims to validate previously developed models of interaction between the melt and concretes of two particular types used in the construction of VVER-1000 NPPs. The experimental and calculation results were compared according to the movement of the concrete erosion boundary, the integral yield of hydrogen, carbon monoxide, and vapors of structural materials, as well as simulators of melt fission products. A satisfactory agreement was obtained according to all characteristics. The scatter of the results at the variation of main calculation parameters was estimated along with the degree of their influence on the concrete penetration depth.

本文介绍了使用 ACE 测试设备（美国）对熔体与混凝土相互作用进行 L4 实验建模的结果。该研究旨在验证先前开发的 VVER-1000 核电站建设中使用的两种特定类型的熔体和混凝土之间相互作用的模型。根据混凝土侵蚀边界的移动、结构材料的氢气、一氧化碳和蒸气的积分产率以及熔融裂变产物的模拟器，对实验和计算结果进行了比较。根据所有特征获得了令人满意的协议。估计了主要计算参数变化时结果的分散性以及它们对混凝土渗透深度的影响程度。