| Title | Implementation and benchmarking of an automatic global variance reduction method on OpenMC |
| Authors | Hu, Yuan Yan, Sha Qiu, Yuefeng Zheng, Yu |
| Affiliation | Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China Karlsruhe Inst Technol, Inst Neutron Phys & Reactor Technol, D-76344 Eggenstein Leopoldshafen, Germany Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China Univ Sci & Technol China, Hefei 230031, Peoples R China |
| Issue Date | Dec-2021 |
| Publisher | FUSION ENGINEERING AND DESIGN |
| Abstract | Shielding calculation is an important but challenging part of safety analyses for nuclear facilities due to the complex geometry and heavy shielding. In this work, an automatic Global Variance Reduction (GVR) method has been developed and implemented in OpenMC, an open-source Monte Carlo (MC) code for neutron and photon transport simulation. This GVR method is based on flux-based GVR method, improving it by defining a novel "pseudo-source", which enhances remarkably computation efficiency. In addition, the OpenMC parallel calculation is also improved with the asynchronous scheduling function to mitigate the unbalance loading on the processes. For benchmarking this automatic GVR method, a simple thick solid sphere benchmark and a heavy shielding cuboid benchmark has been employed. An application on IFMIF-DONES Test Cell has been also adopted to demonstrate the ability of this GVR method on shielding calculations of heavy-shielded facility. These benchmarks and application show the enhancement on computation efficiency, as well as some limitations, of this newly developed GVR method. |
| URI | http://hdl.handle.net/20.500.11897/626303 |
| ISSN | 0920-3796 |
| DOI | 10.1016/j.fusengdes.2021.112829 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 核物理与核技术国家重点实验室 |
