Parallelization of the Hierarchical Domain Decomposition Boundary Element Method Applied to Multiregion Problem of Neutron Diffusion Equations
スポンサーリンク
概要
- 論文の詳細を見る
A hierarchical domain decomposition boundary element method (HDD-BEM) for solving the multiregion neutron diffusion equation (NDE) has been parallelized for parallel computers. The parallelization can be fully applied to the two levels of hierarchical calculations of HDD-BEM: (1) At the lower level, the Helmholtz type mode equations derived from NDEs in decomposed homogeneous regions can be solved by BEM independently and simultaneously for each region and each mode by assuming the multiplication factor and boundary conditions at interfaces between regions. (2) At the higher level, the multiplication factor and boundary conditions assumed at interfaces can be modified independently for different interfaces, using two iterative methods: the block Jacobi method and Newtons method. The parallel computations were implemented on a distributed memory and message passing parallel computer. The relationship between computational performance and the settings of various parameters was investigated to obtain guidelines for high-speed multiprocessing. High-speed performance of the multiprocessing was accomplished by utilizing a remote direct memory access facility to minimize communication overhead caused by message passing between processors. The parallelization is further advantageous in decreasing the number of necessary calculations and reducing the memory storage requirements. This decreases computation times drastically even when using serial computers to shorter than the finite difference method.
- 社団法人 日本原子力学会の論文
- 1999-05-25
著者
-
Tsuji Masashi
Department Of Nuclear Engineering Graduate School Of Engineering Hokkaido University
-
Tsuji Masashi
Department Of Quantum Energy Engineering Faculty Of Engineering Hokkaido University
-
SHIRAHAMA Hisatoshi
Department of Quantum Energy Engineering, Faculty of Engineering, Hokkaido University
-
Tsuji Masashi
Department Of Electrical Engineering Graduate School Of Engineering Tokyo University Of Agriculture
-
Shirahama Hisatoshi
Department Of Quantum Energy Engineering Faculty Of Engineering Hokkaido University
関連論文
- Encapsulation-release property of amphiphilic hyperbranched d-glucan as a unimolecular reverse micelle
- Chiraluty Induction in Cyclopolymerization XVI. Synthesis of Optically Active Poly(methyl acrylate-co-dimethyl fumarate) by Radical Cyclopolymerization of Asymmetrical Nonconjugated Diene Having Chiral pentanediol
- Enantiomer-Selective Radical Polymerization of rac-2,4-Pentanediyl Dimethacrylate by 2,2'-Azobisisobutyronitrile/Copper(II) Trifluoromethanesulfonate/Chiral Diamine as Asymmetric Reverse Atom Transfer Radical Polymerization Initiating System
- Pentane Isomerization over Molybdenum Oxide Prepared by H_2 Reduction of a Hydrogen Molybdenum Bronze
- Effect of the Flow Rate of H_2 in the Reduction Process on the Physical and Catalytic Properties of H_2-Reduced Pt/MoO_3
- Effect of H_2 Flow Rate in Reduction Process on the Catalytic Properties of Reduced MoO_3
- Dehydration of 2-Propanol over Molybdenum Oxide Treated with Hydrogen
- Catalytic Properties of Ni-MoO_3 for the Isomerization of Heptane
- Hyperbranched 5,6-glucan as reducing sugar ball
- Feasibility Study for Evaluation of Control Rod Worth in Pressurized Water Reactors using Neutron Count Rate during a Control Rod Drop Testing
- Development of the Hierarchical Domain Decomposition Boundary Element Method for Solving the Three-Dimensional Multiregion Neutron Diffusion Equations
- Stability Monitoring for BWR based on Singular Value Decomposition Method using Artificial Neural Network
- Subcriticality Measurement by Neutron Source Multiplication Method with a Fundamental Mode Extraction
- Feasibility Study on Subcriticality Monitoring with a Digital Reactivity Meter
- Evaluation of Decay Ratio of BWRs using Singular Value Decomposition Method
- A Higher Harmonics Analysis of 3-D Neutron Diffusion Equation Using the Hierarchical Domain Decomposition Boundary Element Method
- Characteristics of MoO_3 Reduced with H_2 at the Different Flow Rates of H_2
- Subcriticality Measurement of Pressurized Water Reactors during Criticality Approach using a Digital Reactivity Meter
- Subcriticality Measurement of Pressurized Water Reactors by the Modified Neutron Source Multiplication Method
- The Effect of Neutron Source Distribution on Subcriticality Measurement of Pressurized Water Reactors Using the Modified Neutron Source Multiplication Method
- High-Speed Parallel Solution of the Neutron Diffusion Equation with the Hierarchical Domain Decomposition Boundary Element Method Incorporating Parallel Communications
- Parallelization of the Hierarchical Domain Decomposition Boundary Element Method Applied to Multiregion Problem of Neutron Diffusion Equations
- Solar Energetic Particles Studied from Yohkoh Gamma-Ray Observations
- Accurate Estimation of the Number of Weak Coherent Signals
- Stability Analysis of BWRs Using Bifurcation Theory.
- Decoupling Control of Nonlinear Coupled Core Reactor
- Suboptimal control of pressurized water reactor power plant using approximate model-following method.
- Approximated decoupling control of coupled-core nuclear reactor.