A 3D Numerical Study of Supersonic Steam Dumping Process of the Pressurizer Relief Tank
A 3D Numerical Study of Supersonic Steam Dumping Process of the Pressurizer Relief Tank
复制标题
增压泄压罐超音速排汽过程的3D数值研究
DOI：
10.3390/en12122276
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发表时间：
2019
期刊：
影响因子：
3.2
通讯作者：
Canqun Yang
中科院分区：
文献类型：
--
作者：
Yi Wang;Xiao-Wei Guo;Dong Liu;Ge Wu;Chao Li;Lijuan Chen;Ran Zhao;Canqun Yang
由于对大量计算资源的需求和其复杂的物理模型，模拟减压罐的蒸汽倾倒过程是一个具有挑战性的工程问题。本研究对从PRT（减压罐）到包含减压罐的房间的瞬态倾倒过程进行了全面的三维数值研究。详细介绍了该系统的物理模型、几何设计和网格划分策略以及数值计算技术。通过基于开源CFD工具箱OpenFOAM的并行模拟，给出了温度、压力和速度分布的数值结果。结果表明，整个区域的最大速度为967 m/s，速度超过2马赫，房间屋顶的最大压力为2.8 atm。可为反应堆冷却剂系统的安全设计提供指导信息。此外，对OpenFOAM和CFX之间的比较案例进行了测试，结果表明OpenFOAM可以产生与商业CFD软件相当的精度，并且可以在并行模拟中扩展到更多的计算核心。
Simulating the steam dumping process of a pressurized relief tank is a challenging engineering problem, due to the massive computing resource requirements and its complex physical models. This study gave a comprehensive 3D numerical study for the transient dumping process from the PRT (Pressurizer Relief Tank) to the room containing the tank. The physical model, geometry design and meshing strategy, along with the numerical techniques, have been described in detail. Through parallel simulations based on the open source CFD toolbox OpenFOAM, numerical results for the temperature, pressure, and the velocity distribution are presented. The results show that the maximum velocity throughout the whole domain is 967 m/s over Mach 2 and the maximum pressure on the roof of the room is 2.8 atm. It could provide the guidance information for the safety design of the reactor coolant system. Additionally, comparison cases between OpenFOAM and CFX are tested, and it turns out that OpenFOAM could produce comparable accuracy with commercial CFD software and scale to much more computing cores in parallel simulations.