Ray generation and tracking method for neutron transport calculation of hexagonal reactor core of fast reactor

A hexagonal and ray technology, applied in computing, image data processing, 3D modeling, etc., can solve problems such as inappropriateness, achieve the effect of reducing memory requirements and improving parallel computing efficiency

Pending Publication Date: 2020-09-22
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

At present, for fast hexagons, a layer of quadrilaterals is usually added outside, and then rays are generated according to the quadrilaterals, which introduces a lot of redundant parts. Therefore, special processing is required in the tracking part and memory requirements are increased. Not suitable for massively parallel computing

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  • Ray generation and tracking method for neutron transport calculation of hexagonal reactor core of fast reactor
  • Ray generation and tracking method for neutron transport calculation of hexagonal reactor core of fast reactor
  • Ray generation and tracking method for neutron transport calculation of hexagonal reactor core of fast reactor

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Embodiment Construction

[0044] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0045] In order to better understand the present invention, the terms involved in the present invention are first briefly described as follows:

[0046] 1) Azimuth, polar angle, plane ray spacing and polar distance

[0047] The moving direction of neutrons in three-dimensional space is divided into azimuth moving direction and polar moving direction. Therefore, the angle is usually divided into azimuth angle (starting from the positive direction of x-axis) and polar angle (starting from the positive direction of z-axis), azimuth angle and polar angle. The angles are the angles discretized in the plane and the axial direction, respectively. Planar ray spacing is the spacing between 2D trajectories, and polar spacing is the spacing between l-z plane traject...

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Abstract

The invention provides a ray generation and tracking method for neutron transport calculation of a hexagonal reactor core of a fast reactor. The ray generation and tracking method can greatly reduce the requirement for memory under the same reactor core geometry while improving the parallel calculation efficiency. The method comprises the following steps: constructing a hexagonal geometric model of a fast reactor core, generating a 2D trajectory on the constructed geometric model according to discrete azimuth angles and planar ray spacing, and correcting the generated 2D trajectory according to boundary conditions, wherein the track is a ray; forming a 2D trajectory chain according to the corrected 2D trajectory, determining the length and the number of each trajectory chain, and generating a 3D trajectory on the l-z plane; and mapping the 3D track generated on the l-z plane into real three-dimensional geometry to generate a real 3D track, and tracking the real 3D track. The inventionrelates to the technical field of intersection of neutron physics and high-performance calculation.

Description

technical field [0001] The invention relates to the cross technical field of neutron physics and high-performance computing, in particular to a ray generation and tracking method for fast reactor hexagonal core neutron transport calculation. Background technique [0002] The characteristic line (MOC, Method Of Characteristics) is the most common deterministic method for neutron transport calculation, which mainly discretizes the angle variable, and solves the differential form of neutron input on rays with discrete angles in space. luck equation. These rays are called characteristic lines, which are actually the imaginary flight paths of neutrons moving in geometry. [0003] Using the MOC method for transport calculation, the general process is: core modeling, grid subdivision, ray generation and tracking, transport scanning feature lines and output results, among which ray generation and tracking is a key step in linking the past and the future, and its input is the core ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T11/20
CPCG06T17/00G06T11/20
Inventor 胡长军王根汪岸胡赟单浩栋曹敏方雅王珏
Owner UNIV OF SCI & TECH BEIJING
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