Development of a CFD ? LES model for the dynamic analysis of the DYNASTY natural circulation loop

被引：10

作者：

Battistini, A. ^{[1
,3
]}

Cammi, A. ^{[1
]}

Lorenzi, S. ^{[1
]}

Colombo, M. ^{[2
]}

Fairweather, M. ^{[2
]}

机构：

[1] Politecn Milan, CeSNEF Nucl Engn Div, Dept Energy, Nucl Reactors Grp, Via La Masa 34, I-20156 Milan, Italy

[2] Univ Leeds, Fac Engn & Phys Sci, Sch Chem & Proc Engn, Leeds LS2 9JT, W Yorkshire, England

[3] Imperial Coll London, Dept Mat, London SW7 2AZ, England

来源：

CHEMICAL ENGINEERING SCIENCE | 2021年 / 237卷 / 237期

基金：

英国工程与自然科学研究理事会;

关键词：

CFD; LES; Natural circulation; Thermal?hydraulics; Molten salt; OpenFOAM; LARGE-EDDY SIMULATION; CONVECTION;

D O I：

10.1016/j.ces.2021.116520

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Natural circulation is exploited in nuclear systems to passively remove power in case of accident scenarios. In this regard, the DYNASTY experimental facility at Politecnico di Milano has been setup to increase the knowledge on single-phase, buoyancy-driven systems in the presence of distributed heating. In this paper, the development of a computational fluid dynamics (CFD) model of DYNASTY is presented, focusing on the capability of CFD to assess the dynamic behavior of the facility. The large eddy simulation (LES) model takes into account both the fluid and the solid regions, with heat generation and 3D heat conduction resolved in the pipe walls. The study, conducted using OpenFOAM, shows (i) the capability of reproducing stable and unstable transients of DYNASTY, (ii) new observations on the features of flow reversals during unstable transients, (iii) the suitability and the advantages of LES for the prediction of the specific features of natural circulation systems. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).

引用

页数：13

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