Efficient parallel solution of the 3D stationary Boltzmann transport equation for diffusive problems

JOURNAL OF COMPUTATIONAL PHYSICS

卷:388

Article

Moustafa, Salli^1,2  Fevotte, Francois¹  Faverge, Mathieu^2,3  Plagne, Laurent¹  Ramet, Pierre^2,4 

[1] EDF Lab Paris Saclay, 7 Blvd Gaspard Monge, F-92120 Palaiseau, France

[2] INRIA Bordeaux Sud Ouest, LaBRI, Talence, France

[3] Bordeaux INP, Talence, France

[4] Univ Bordeaux, Talence, France

关键词: Boltzmann equation;    Neutron transport;    Parallel computing;    Vectorization;    Diffusion synthetic acceleration;    PWR nuclear core;   

DOI  :  10.1016/j.jcp.2019.03.019

来源: Elsevier

【 摘 要 】

This paper presents an efficient parallel method for the deterministic solution of the 3D stationary Boltzmann transport equation applied to diffusive problems such as nuclear core criticality computations. Based on standard MultiGroup-Sn-DD discretization schemes, our approach combines a highly efficient nested parallelization strategy[1] with the PDSA parallel acceleration technique[2] applied for the first time to 3D transport problems. These two key ingredients enable us to solve extremely large neutronic problems involving up to 10(12) degrees of freedom in less than an hour using 64 super-computer nodes. (c) 2019 Elsevier Inc. All rights reserved.

【 授权许可】

Free