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Multiple parallel method based on characteristic line method

A feature line method and feature line technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of insufficient utilization, limited parallelism, etc., to improve accuracy and computational efficiency, and reduce the number of layers. Effect

Active Publication Date: 2016-11-09
XI AN JIAOTONG UNIV
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Problems solved by technology

Most of the three-dimensional transport methods for the whole core under development are based on single variables to achieve parallelism, such as energy groups, angles, spaces or characteristic lines, but their parallelism is limited and cannot make full use of the current state-of-the-art supercomputer resources

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  • Multiple parallel method based on characteristic line method
  • Multiple parallel method based on characteristic line method
  • Multiple parallel method based on characteristic line method

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0031] The calculation process of the multiple parallel method based on the characteristic line method of the present invention is as follows figure 1 As shown, after the non-uniform calculation of the radial MOC for each layer of the reactor core, the homogenization is performed to obtain the layered homogenized section of the cell, and the three-dimensional transport calculation is performed, and then the axial leakage item of the radial MOC calculation is updated until Iterative convergence.

[0032] In order to efficiently and quickly calculate the radial two-dimensional transport of the reactor core, considering the complex radial arrangement and strong non-uniformity, the MOC method is the best solution method.

[0033] The non-uniform calculation of radial MOC includes three dimensions of space, angle and characteristic line, and each di...

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Abstract

The invention discloses a multiple parallel method based on a characteristic line method. After radial MOC inhomogeneous calculation is carried out on each layer of a core of a reactor, the layering homogenization cross section of a lattice cell is obtained in a homogenization mode, three-dimensional transportation calculation is carried out, and then an axial leakage item for radial MOC inhomogeneous calculation is updated until iterative convergence is achieved. By means of the mode of analyzing the effects of the parallel efficiency of space, the parallel efficiency of angles and the parallel efficiency of characteristic lines on the total parallel efficiency at the same time, a multiple parallel optimization scheme is determined.

Description

technical field [0001] The invention relates to the field of nuclear reactor core design and reactor physical calculation, in particular to a multiple parallel method including space, angle and characteristic line based on MOC (Method of Characteristics). Background technique [0002] In order to adapt to the rapid development of nuclear energy in my country and meet the requirements for safe and efficient use of nuclear energy, the need for upgrading existing nuclear power technology and developing a new generation of nuclear power technology has become more and more urgent. Nuclear reactor physical calculation analysis obtains the internal operation state of the reactor through numerical simulation, which is the theoretical basis of nuclear reactor design. The reactor physical numerical calculation can predict the state of the reactor under various working conditions, provide a basis for the operation of the nuclear reactor, and provide an important reference for the contr...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 刘宙宇马党伟吴宏春曹良志
Owner XI AN JIAOTONG UNIV
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