B. STREAM 3D
Download Intro_STREAM_3D
The Recommended Publication for Citing
Sooyoung Choi, Deokjung Lee*, "Three-Dimensional Method of Characteristics/Diamond-Difference Transport Analysis Method in STREAM for Whole-core Neutron Transport Calculation," Comput. Phys. Commun., 260:107332, https://doi.org/10.1016/j.cpc.2020.107332 (2021)
Sooyoung Choi, Changho Lee, Deokjung Lee*, “Resonance Treatment using Pin-Based Pointwise Energy Slowing-Down Method,” J. Comput. Phys., 330: 134-155. http://dx.doi.org/10.1016/j.jcp.2016.11.007 (2017)
Introduction
A neutron transport analysis code, STREAM 3D (Steady state and Transient REactor Analysis code with Method of Characteristics), has been developed to perform a whole LWR core calculation with the direct transport analysis method. Numerous advanced features, especially resonance treatment methods, hybrid of MPI and OpenMP, have been developed and implemented in the STREAM 3D code for higher accuracy and performance. STREAM 3D with the advanced methods has capabilities to analyze the 3D whole LWR core direct transport method.
Features
Direct 3D core design
– 3D MOC-DD method
– Hybrid MPI/OPENMP parallelization
– Thermal expansion
– Fuel assembly shuffling/refueling
– Thermal-hydraulics (TH) feedback
– Equilibrium Xe feedback & Critical boron concentration search
Multi-physics
– Gamma contribution to power with gamma transport
– STREAM3D coupled with CTF/FRAPCON
Multi-group Cross-Section Generation
– Pin-based pointwise energy slowing-down method
– Equivalence theory for structure material
– Resonance upscattering correction
– Enhanced neutron current method
– Resonance interference factor library method (option)
– Inflow transport correction
Transport Solver
– Method of Characteristics
– T-Y optimum quadrature sets
– Assembly modular ray tracing method
– Direct neutron path linking method
– P0~P5 scattering source treatment
– Coarse mesh finite difference acceleration
Depletion
– Matrix exponential method
– Chebyshev rational approximation method
– Chain with ~1400 isotopes
– Predictor/corrector
3D Whole core Modelling
Functions for multi-cycle operation (restarting/unfolding/shuffling/reloading)
Benchmark: BEAVRS HFP simulation
Multi-physics coupling with CTF/FRAPCON
