期刊论文

Development of 3-D Parallel First Collision Source Module

中文

核动力工程

0258-0926

2021

42

2

39-42

10.13832/j.jnpe.2021.02.0039

61602047:国家自然科学基金 190XQD146:校级科研课题

本校为第一机构

为了解决首次碰撞源方法对于大规模网格计算效率低以及近源区存在较大计算误差的问题,研制了三维并行首次碰撞源模块。该模块采用区域分解方法实现三维首次碰撞源并行计算,利用自适应源区网格加密方法降低近源区的计算误差。计算结果表明,并行计算有效地提高了计算效率,140核并行计算时,并行效率可达66.89%,自适应源区网格加密方法很好地降低了近源区的计算误差。

The computational efficiency of the first collision method is low for large-scale mesh problems, and meanwhile there is a large calculation error in the near source region. In order to solve these problems, 3-D parallel first collision source module is developed in this paper. The spatial domain partition algorithm is adopted to improve the computational efficiency, and the adaptive source region mesh refinement technique is performed to decrease the calculation error in the near source region. The results show that the parallel computing impro...