A5077716103- Nuclear reactor physics and engineering
- Heat Transfer and Boiling Studies
- Nuclear Physics and Applications
- Heat Transfer and Optimization
- Graphite, nuclear technology, radiation studies
- Nuclear Engineering Thermal-Hydraulics
- Nuclear Materials and Properties
- Fusion materials and technologies
- Engineering Applied Research
- Parallel Computing and Optimization Techniques
- Medical Imaging Techniques and Applications
Seoul National University
2023
Heat-pipe-cooled microreactors (HPRs) have advantages such as a compact design, easy transportation, and improved system reliability stability. The core of an HPR consists fuel rods heat pipes in monolith, which is solid block structure containing many holes for the pipes. When designing HPR, high thermal stress reactivity feedback owing to expansion are important considerations. Therefore, high-fidelity multiphysics analysis tool required accurately analyzing core. performing analysis, it...
A multiphysics analysis system for neutronics/thermomechanical/heat pipe thermal of heat pipe–cooled micro reactors was developed using the PRAGMA code as neutronics engine. PRAGMA, which a graphics processing unit (GPU)-based continuous-energy Monte Carlo power reactor applications, now has an extended geometry package to handle geometries with unstructured meshes generated by Coreform Cubit. The NVIDIA ray-tracing engine OptiX been exploited efficient neutron transport on mesh geometry. On...
The BEAVRS benchmark is solved by PRAGMA, the graphics processing unit (GPU)–based continuous-energy Monte Carlo code. solutions consist of detailed simulation results for two cycles that involve reactivity and pin power distribution information zero-power physics tests depletion. Primary at hot zero power, such as critical boron concentration various rodded conditions, control rod bank worth, isothermal temperature coefficients, assemblywise detector signal, are compared with measured data....
The newly developed 2D/3D method operating over the unstructured mesh geometry is introduced. Implemented in NuDEAL code, alternates planar of characterization (MOC) and diffusion-based hybrid finite element (HFEM), with MOC solving 2D decoupled fine HFEM providing 3D coarse flux distributions based on solution. consistency between diffusion made devised factors volumetric surface distributions. Furthermore, consistent fully accelerated using GPUs, which results a 50-speedup red-black sweep...
A heat pipe cooled microreactor (HPMR) offers advantages such as compact design, ease of transportation, and improved system reliability safety. The core the HPMR consists a solid structure called “monolith,” which contains multiple fuel rods pipes (HPs). During design process core, high thermal stress resulting from large temperature gradient reactivity feedback due to expansion are important considerations. To address these phenomena, high‐fidelity multiphysics analysis tool is required...