论文标题
通过geant4中气溶胶的颗粒传输有效建模
Efficient Modeling of Particle Transport through Aerosols in GEANT4
论文作者
论文摘要
我们提出了一个几何类别，用于有效地模拟Geant4中的气溶胶的颗粒传输。证明气溶胶粒度可以强烈影响这种传输，因此，通用的气溶胶模型必须尊重这种粒度，所介绍的类通过将气溶胶建模为液滴的集合来实现。对于大型气溶胶，此类是比标准粒度依赖性的方法更快且较少的记忆力，用于对Geant4中的气溶胶进行建模。通过更简单的体素化优化，仅通过与传输相关的液滴以及使用液滴几何形状来考虑每个计算较少的液滴来允许这些收益。所呈现的类允许不同的气溶胶散装/液滴形状，带有结构的液滴以及空间变化的液滴位置/旋转。
We present a geometry class for efficiently simulating particle transport through aerosols in GEANT4. It is demonstrated that aerosol granularity can strongly affect this transport and thus a generic aerosol model must respect this granularity, which the presented class achieves by modelling the aerosol as a collection of droplets. For large aerosols, this class is orders of magnitude quicker and less memory intensive than standard granularity-respecting methods to model aerosols in GEANT4. These gains are allowed by simpler voxelization optimization, by only populating droplets relevant to the transport, and by using droplet geometry to consider fewer droplets per calculation. The presented class allows differing aerosol bulk/droplet shape, droplets with structure, and spatially varying droplet position/rotation.
