Interactions between fluid-dynamics and neutronic phenomena in the physics of molten-salt systems

被引：13

作者：

Dulla, S. ^{[1
]}

Ravetto, P. ^{[1
]}

机构：

[1] Politecn Torino, Dipartimento Energet, I-10129 Turin, Italy

来源：

NUCLEAR SCIENCE AND ENGINEERING | 2007年 / 155卷 / 03期

关键词：

D O I：

10.13182/NSE07-A2678

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The paper is devoted to the analysis of the importance of fluid-dynamics phenomena in the neutronic simulation of fluid-fuel multiplying nuclear systems. The motion of the delayed neutron precursors has important effects on both steady-state and transient situations. In this paper the role of the motion is studied by assuming that the coupled neutronic-fluid-dynamics model is simplified, introducing different velocity fields as input data for the delayed neutron precursor balance equations. Significant effects are evidenced for steady-state spatial distributions and integral parameters, such as reactivity and effective delayed neutron fractions. Full time-dependent evaluations are also performed to investigate the response in different system configurations to various transient initiator perturbations.

引用

页码：475 / 488

页数：14