基于CAD / CSG双层混合数值化建模的蒙卡粒子混合输运实现方法
By combining CSG and CAD modeling in complex geometries, a two-layer hybrid numerical method is used to solve the problem of low computational efficiency in Monte Carlo particle transport, achieving high efficiency and accuracy in particle transport. This method is applicable to mixed Monte Carlo particle transport in the field of nuclear reactor control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI JIAOTONG UNIV
- Filing Date
- 2023-10-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies using the Monte Carlo method to simulate particle transport are efficient when using CSG geometric modeling alone, but cannot describe complex surfaces. CAD geometric modeling alone is computationally inefficient and cannot be used directly for particle transport. Furthermore, the converted CSG format files have low readability and significant deviations.
A hybrid numerical modeling method based on CAD/CSG is adopted, in which solids in complex geometries are described using CSG and high-order surfaces are modeled using CAD. Particle transport is carried out in the two overlapping layers. The motion of particles in the two layers is distinguished by the position and flight direction information of the particles. Combining CSG and CAD modeling methods improves the accuracy of geometric description and the efficiency of particle transport.
It improves the computational efficiency of Monte Carlo simulations in complex geometric models, balancing the accuracy of geometric description with the efficiency of particle transport. It is more accurate than CSG modeling alone and more efficient than CAD modeling alone.
Smart Images
Figure CN117454727B_ABST