Parallel scanning method used for reactor shielding calculation

A scanning method and reactor technology, which are applied in computing, special data processing applications, instruments, etc., can solve problems such as the large amount of calculation of the three-dimensional discrete ordinate method, the difficulty in completing the reactor shielding design, and the inability to fully invoke computing resources, etc. Parallel efficiency, avoiding the effect of divergence

Active Publication Date: 2016-11-16
XI AN JIAOTONG UNIV
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Problems solved by technology

Since the shielding calculation is usually a deep penetration problem, the convergence of the Monte Carlo method has encountered great challenges, and there is still a long way to go in engineering
The three-dimensional discrete ordinate method has a huge amount of calculations. If serial calculations are used, the calculation resources cannot be fully invoked, and it is difficult to complete the task of reactor shielding design.

Method used

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  • Parallel scanning method used for reactor shielding calculation
  • Parallel scanning method used for reactor shielding calculation
  • Parallel scanning method used for reactor shielding calculation

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The present invention discretizes the transport equation through the fine mesh difference method, and at the same time divides the fine mesh area into several sub-areas, and divides each sub-area into several parallel units along the axial direction. Through the communication between the parallel units, all The CPUs are coupled together, and the scanning order of the parallel units is consistent with the scanning order of the angular flux in the discrete ordinate method, so as to ensure the convergence and high efficiency of parallel computing. This method mainly includes the following aspects:

[0028] 1) By introducing angular space discretization, a transport equation on a continuous geometry is discretized into an equilibrium equation on each fine mesh, and a three-dimensional fine mesh model is established;

[0029] 2) Usi...

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Abstract

The invention discloses a parallel scanning method used for nuclear reactor shielding calculation. The method comprises the following steps: carrying out splitting approximation on refined nets for computational geometry, and then dividing the refined nets into a plurality of areas, wherein one CPU is responsible for each area, and meanwhile each area for which one CPU is responsible is divided into a plurality of parallel units; and after the calculation of the parallel units on one CPU is finished, computing information can be transferred to adjacent parallel units, so that efficient parallel shielding calculation is realized, and a powerful safeguard is provided for the safety and economy of nuclear power plant design.

Description

technical field [0001] The invention relates to the field of nuclear reactor shielding calculations, and is a parallel calculation method for obtaining fine distribution of three-dimensional neutron and photon flux densities in the reactor core and its exterior. Background technique [0002] The distribution of neutron and photon flux density in the reactor is very important to the safety and economy of the whole nuclear power plant design. The irradiation of neutrons and photons will deteriorate the material properties of various equipment in the reactor building, thereby limiting the life of the entire nuclear power plant. The shielding design of the reactor is to avoid neutrons and photons leaking from the core into the reactor building as much as possible. Therefore, shielding calculation has become a crucial part of nuclear power plant design, and its main task is to obtain the neutron photon flux distribution in the reactor. [0003] Currently widely used methods can...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 吴宏春徐龙飞郑友琦刘宙宇曹良志
Owner XI AN JIAOTONG UNIV
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