A method and system for visual modeling and conversion of Monte Carlo programs

Abstract

The invention provides a visual modeling and conversion method and a system of a Monte Carlo program, comprising the following steps: generating each conversion geometry corresponding to the geometrymodel to be converted according to a model file of the geometry model to be converted stored locally; and converting the geometry model to be converted. Each of the conversion geometries has geometrical information, the geometrical information includes absolute spatial information and geometrical shape information; Acquiring attribute information of each conversion geometry from a locally stored parameter file of a geometry model to be converted; The attribute information includes: material information and parent-child relationship information; According to each conversion geometry, attributeinformation and geometric information of each conversion geometry, the geometric model to be converted is converted according to the geometric description markup language standard. The geometrical model and the conversion method created by the invention have the beneficial effects of improving modeling efficiency, lightening user modeling workload, and improving model conversion accuracy and spatial relationship description.

Description

technical field [0001] The invention relates to the technical field of Monte Carlo modeling, in particular to a method and system for visual modeling and conversion of a Monte Carlo program. Background technique [0002] At present, the Monte Carlo method is widely used in the design calculation and evaluation analysis in the nuclear field, especially the calculation analysis related to neutronics, such as reactor physical design, radiation shielding design, nuclear safety analysis, etc. It simulates the movement of a considerable number of particles in the medium, for which it is necessary to describe the space model to be simulated, that is, the geometric model representation. The well-known general-purpose Monte Carlo programs in the world include MCNP, GEANT4, EGS, etc. These programs have complete geometric description methods, but lack effective modeling methods. Generally, the description of geometric models is written by hand. conduct. For complex geometric models,...

AI Technical Summary

Problems solved by technology

[0006] 1. The conversion from BREP to CSG has great limitations, and it is impossible to establish a fine and real device model according to the needs of users, resulting in inaccurate converted models

[0007] 2. It cannot help users reduce the modeling workload and quickly correct errors, and cannot realize the search and editing of models and material parameters

[0008] 3. Lack of description of geometrical spatial relationships. Monte Carlo program is one of the most time-consuming software in the world, in which geometric calculation time accounts for more than 70% of Monte Carlo program. For reactor models with geometry exceeding one million , the description without spatial relationship will face the situation of immovability

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