Natural Convection Heat Transfer in the Horizontal Dry Storage System for the LWR Spent Fuel Assemblies

Autor:	Isamu Maekawa, Hiroaki Shibazaki, Sadao Fujii, Motohiko Nishimura
Rok vydání:	1996
Předmět:	Flow visualization Convection Nuclear and High Energy Physics Natural convection Nuclear Energy and Engineering Flow velocity Particle tracking velocimetry Chemistry Heat transfer Thermodynamics Heat transfer coefficient Rayleigh number Mechanics
Zdroj:	Journal of Nuclear Science and Technology. 33:821-828
ISSN:	1881-1248 0022-3131
Popis:	A heat transfer and flow visualization experiment was conducted with a one-fifth scale model simulating a dry shielded canister (DSC) with 24 PWR spent fuel assemblies in order to elucidate the heat transfer characteristics and the velocity distribution for natural convection inside a DSC filled with air or water at atmospheric pressure. It was found that the average heat transfer coefficients were proportional to the one-fourth power of the Rayleigh number despite the complicated geometry inside the DSC. Flow patterns inside the DSC were visualized clearly through a digital image processing system. The velocity distributions inside the DSC were obtained quantitatively from the Particle Tracking Velocimetry. In comparison with the results of a two-dimentional thermal hydraulic analysis, computed flow patterns were similar to the experimental results and the computational temperature distributions on the sleeve surfaces agreed well with the experiments within 8%, except at the top point of the center gap. ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7564164ec3575185cfa48736c1fdf142 https://doi.org/10.1080/18811248.1996.9732015 Zobrazit plný text záznamu