Numerical simulation of turbulent flow through a 37-element CANDU fuel bundle

被引：15
|
作者：
Bhattacharya, A. [1 ]
Yu, S. D. [1 ]
Kawall, G. [1 ]
机构：
[1] Ryerson Univ, Dept Mech & Ind Engn, Toronto, ON M5B 2K3, Canada
来源：
ANNALS OF NUCLEAR ENERGY | 2012年 / 40卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
CANDU fuel; Large eddy simulation; Vortex shedding; Turbulent flow; Bundle vibration; PREDICTION; RANS; LES;
D O I：
10.1016/j.anucene.2011.10.017
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：
In this paper, a comprehensive Computational Fluid Dynamics (CFD) model containing the entire bundle subchannels and the inlet endplate subchannels for a 37-element simulated CANDU fuel bundle is developed for the first time. Results from this study, obtained for different mass flow rates, revealed the presence of strong turbulent swirling flow in many bundle subchannels around the entrance region. Several spikes from the power spectrum densities of (a) the computed pressures at different points inside the subchannels and (b) the unsteady forces and rolling moments on various fuel element walls are appeared to be associated with the turbulent wakes formed as the coolant enters the fuel bundle through the inlet endplate subchannels. (C) 2011 Elsevier Ltd. All rights reserved.
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页码：87 / 105
页数：19
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