压水堆(PWR)全堆芯采用计算流体动力学(CFD)技术进行仿真面临的问题较多。例如:堆芯网格缺乏精细化设计会导致仿真失真,而堆内大量复杂结构区的精细化设计与方案筛选需占用大量时间;PWR全堆芯CFD仿真需超600亿的巨量网格,致使仿真需要大量的计算资源与时间。针对这些问题,设计了多湍流模型分段应用、几何简化与仿真修正方案,保证了仿真优化的准确度,并显著降低计算量与时间。 Pressure PWR (PWR) full core computational fluid dynamics (CFD) technology to simulate the face more problems. For example, the lack of refinement of the core grid will result in simulation distortions, while the elaborate design and solution screening of a large number of complex structure regions in the reactor will take a great deal of time. PWR full core CFD simulation requires a huge amount of grids exceeding 60 billion, Causing simulation requires a lot of computing resources and time. Aiming at these problems, multi-turbulence model segmentation design, geometry simplification and simulation correction scheme are designed to ensure the accuracy of simulation optimization and significantly reduce the amount of computation and time.