Programs LUCKY & LUCKY_C—3D parallel transport codes for the multy-group transport equation solution for XYZ geometry by PmSn method

2004 ◽  
pp. 439-446
Author(s):  
Moriakov A. ◽  
Vasyukhno V. ◽  
Netecha M. ◽  
Khacheresov G.
Keyword(s):  
Transport Equation ◽  
Parallel Transport ◽  
Equation Solution ◽  
Group Transport

Application of Hybrid Subgroup Decomposition Method to Gas Cooled Thermal Reactor Problem

2014 ◽  
Author(s):  
Saam Yasseri ◽  
Farzad Rahnema
Keyword(s):  
Transport Equation ◽  
Computational Efficiency ◽  
Decomposition Method ◽  
High Accuracy ◽  
Numerical Results ◽  
New Method ◽  
Thermal Reactor ◽  
Problem Characteristic ◽  
Group Transport ◽  
Subgroup Decomposition

In this paper, a newly developed hybrid subgroup decomposition method is tested in a 1D problem characteristic of gas cooled thermal reactors (GCR). The new method couples an efficient coarse-group eigenvalue calculation with a set of fine-group transport source iterations to unfold the fine-group flux. It is shown that the new method reproduces the fine-group transport solution by iteratively solving the coarse-group quasi transport equation. The numerical results demonstrate that the new method applied to 1D GCR problem is capable of achieving high accuracy while gaining computational efficiency up to 5 times compared to direct fine-group transport calculations.

Two-group transport equation with a separable kernel

1971 ◽  
Vol 1 (3) ◽  
pp. 239-260 ◽  
Author(s):  
P. Silvennoinen ◽  
P. F. Zweifel
Keyword(s):  
Transport Equation ◽  
Separable Kernel ◽  
Group Transport
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