二维MOC的CMFD加速计算模块开发与验证

摘要

Several acceleration methods for 2D method of characteristics (M OC ) are encoded in DRAGON code .However ,the coarse mesh finite difference (CMFD) accel‐eration method with high speedup is not applied .In order to accelerate the 2D MOC calculation in DRAGON with higher speedup ,the CMFD acceleration calculation mod‐ule was developed and its stabilization was also studied .The C5G7‐2D benchmark was used to testify the CM FD acceleration module .Numerical results demonstrate that the CM FD acceleration calculation module is more efficient than the other acceleration calcu‐lation modules encoded in the original DRAGON code , and is more stable than the OpenM OC code .%DRAGON程序中的二维特征线法（MOC）计算模块包含多种加速方法，但加速效率很高的粗网有限差分（CMFD）加速算法并未得到应用。为提高DRAGON程序中现有的二维MOC计算模块的计算效率，开发了CM FD加速计算模块并探究其收敛稳定性。运用C5G7‐2D基准题验证所开发的CM FD加速计算模块，验证结果表明，所开发的CM FD加速计算模块与DRAGON程序中原有的加速模块相比具有很高的计算效率，较同类计算程序OpenMOC有更好的收敛稳定性。