Experimental and Numerical Study of Stagnant Zones in Pebble Bed
Joint Authors
Jia, Xinlong
Yang, Xingtuan
Gui, Nan
Li, Yu
Tu, Jiyuan
Jiang, Shengyao
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-18
Country of Publication
Egypt
No. of Pages
10
Abstract EN
The experimental method (side area method) and DEM simulation have been carried out to analyse the stagnant zone in the quasi-two-dimensional silos.
The side area method is a phenomenological method by means of investigating the interface features of different areas composed of different coloured pebbles.
Two methods have been discussed to define the stagnant zone.
In particular, the area of the stagnant zone has been calculated with the mean-streamline method, and the tracking time of different marking pebbles has been investigated with the stagnant time method to explore the kinematics characteristics of the pebbles.
The stagnant zone is crucial for the safety of the pebble-bed reactor, and the practical reactor core must avoid the existence of the stagnant zone.
Furthermore, this paper also analyses the effects of bed configuration (the bed height, the base angle, and the friction coefficient) on stagnant zone with the two methods mentioned above.
In detail, the bed height shows little impact on the stagnant zones when the bed height exceeds a certain limit, while the base angle has negative prominent correlation with the stagnant zone.
The friction coefficient effect seems complicated and presents the great nonlinearity, which deserves to be deeply investigated.
American Psychological Association (APA)
Jia, Xinlong& Yang, Xingtuan& Gui, Nan& Li, Yu& Tu, Jiyuan& Jiang, Shengyao. 2014. Experimental and Numerical Study of Stagnant Zones in Pebble Bed. Science and Technology of Nuclear Installations،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1047720
Modern Language Association (MLA)
Jia, Xinlong…[et al.]. Experimental and Numerical Study of Stagnant Zones in Pebble Bed. Science and Technology of Nuclear Installations No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-1047720
American Medical Association (AMA)
Jia, Xinlong& Yang, Xingtuan& Gui, Nan& Li, Yu& Tu, Jiyuan& Jiang, Shengyao. Experimental and Numerical Study of Stagnant Zones in Pebble Bed. Science and Technology of Nuclear Installations. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1047720
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1047720