Experimental investigation on fluid–structure-coupled dynamic characteristics of the double fuel assemblies in a fast reactor

• Published in: Nuclear engineering and design Vol. 255; pp. 180 - 184
• Main Authors: Lu, Daogang, Liu, Aiguo, Shang, Chaohao, Dang, junjie, Hong, yang, Xie, qingyu
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2013; Elsevier
• Subjects: Applied sciences; Assemblies; Controled nuclear fusion plants; Dynamic characteristics; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fission nuclear power plants; Fuels; Installations for energy generation and conversion: thermal and electrical energy; Mathematical models; Nuclear engineering; Nuclear fuels; Nuclear power generation; Nuclear reactor components; Nuclear reactors; Dynamic characteristic; Fluid dynamics; Fast reactor; Fluid structure interaction; Modeling; Reactor core; Nuclear reactor
• ISSN: 0029-5493; 1872-759X
• DOI: 10.1016/j.nucengdes.2012.10.013

An experiment was performed to investigate the fluid–structure-coupled dynamic characteristics of the under-water hexagonal fuel assemblies used in a fast reactor. As the dynamic characteristics, the added mass and damping caused by fluid–structure interaction (FSI) were usually treated as the constants in the previous researches. By the present experiment, it was proven that the added mass and damping were the variables strongly dependent on the fluid-filled gap between the double hexagonal fuel assemblies. These experimental data can be used as the modeling parameters for the seismic analysis of the core in a fast reactor.