An Experimental Facility to Investigate the Natural Circulation Dynamics in Presence of Distributed Heat Sources. (November 2016)

• Record Type: Journal Article
• Authors: Pini, A.; Cammi, A.; Cauzzi, M.; Fanale, F.; Luzzi, L.
• Is Part Of: Energy procedia. Volume 101(2016)
• Page Start: 10
• Page End: 17
• Publication Date: 2016-11
• Subjects: Natural circulation -- Internal heat generation -- Stability analysis -- Thermal-hydraulics -- Object-oriented modelling -- CFD.; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2016.11.002
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: This paper deals with the dynamic behaviour of the DYNASTY facility. DYNASTY is a natural circulation loop aimed at studying the natural circulation dynamics in presence of volumetric distributed heat sources, and is provided with an All-External Heat Flux (A-EHF) to reproduce the effect of the Internal Heat Generation (IHG). To compare the A-EHF and the IHG cases, semi-analytical and numerical approaches are considered. As for the semi-analytical investigation, a linear analysis is performed to study the asymptotic equilibrium stability. Regarding the numerical viewpoint, an Object-Oriented 1D model and a 3D Computational-Fluid-Dynamics model are adopted to study the time-dependent behaviour.