Development of deterministic two and three dimensional neutron transport simulation methods for finite nuclear reactor calculations

开发用于有限核反应堆计算的确定性二维和三维中子输运模拟方法

• 批准号: 195505-2011
• 负责人: Marleau, Guy
• 金额: $ 1.97万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=523269
• 关键词: Development; deterministic; two; three; dimensional

The main objective of this research proposal is to update the calculations techniques available in the code DRAGON, one of the very few lattice codes available worldwide that can deal with three dimensional deterministic transport problems, in such a way that it can be applied to full reactor systems. This implies: 1) generalizing DRAGON in such a way that it can treat more complex geometrical systems; 2) applying projection, extrusion and cyclic mapping methods to general prismatic geometries to accelerate the two and three dimensional line tracking process and to reduce by several orders of magnitude the dimensions of the resulting tracking file; 3) implementing parallel computation schemes in the code to benefit from the current development in computer technology; and 4) developing a robust acceleration scheme for the power iteration (fission sources and the multiplication constant) when large multi-energy (>100) and multi-region (> 100000) transport problems must be analyzed.

本研究提案的主要目标是更新 DRAGON 代码中可用的计算技术，DRAGON 是全球极少数可以处理三维确定性输运问题的格子代码之一，从而可以应用于全反应堆系统。这意味着：1）以可以处理更复杂的几何系统的方式概括 DRAGON； 2) 将投影、挤压和循环映射方法应用于一般棱柱几何形状，以加速二维和三维线跟踪过程，并将所得跟踪文件的尺寸减少几个数量级； 3）在代码中实现并行计算方案，以受益于当前计算机技术的发展； 4）当必须分析大型多能量（>100）和多区域（>100000）输运问题时，为功率迭代（裂变源和倍增常数）开发鲁棒的加速方案。