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

Autor:	S.D. Yu, G. Kawall, A. Bhattacharya
Rok vydání:	2012
Předmět:	Materials science Nuclear Energy and Engineering business.industry Turbulence Mass flow Bundle Flow (psychology) Mechanics Computational fluid dynamics business Vortex shedding Large eddy simulation Coolant
Zdroj:	Annals of Nuclear Energy. 40:87-105
ISSN:	0306-4549
DOI:	10.1016/j.anucene.2011.10.017
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::471656400b2244036eca9edff0749ba7 https://doi.org/10.1016/j.anucene.2011.10.017 Zobrazit plný text záznamu Full Text from ScienceDirect