Title: Buoyancy driven flow in reactor safety
Authors: Vaibar, Roman
Höhne, Thomas
Citation: Applied and Computational Mechanics. 2009, vol. 3, no. 1, p. 221-232.
Issue Date: 2009
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/old_acm/full_papers/acm_vol3no1_p21.pdf
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: hydrodynamika;turbulentní proudění;hydromechanika;difúze;tlakovodní jaderné reaktory;simulace a modelování
Keywords in different language: hydrodynamics;turbulent flow;hydromechanics;diffusion;water pressure nuclear reactors;simulation and modelling
Abstract: Buoyancy driven flow is often found in many engineering applications such as the mixing process of fluids, which have different densities. The aim of this study is to simulate mixing of borated and unborated water, an issue which is relevant to the analysis of the safety of nuclear reactors. The degree of mixing of weakly and highly borated coolant is a critical issue with respect to reactivity of the reactor core. Therefore, a combined numerical and experimental study of buoyant mixing processes has been performed. The numerical studies on different types of grid show, that the main influence to the discription of the mixing processes is the simplifacation of the flow domain. In the case when the proper flow domain is used, a better agreement between the numerical and experimental results can be achieved.
Rights: © 2009 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 3, number 1 (2009)
Volume 3, number 1 (2009)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/1914

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