The Effective Convectivity Model for Simulation of Molten Metal Layer Heat Transfer in a Boiling Water Reactor Lower Head
Joint Authors
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-30
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
This paper is concerned with the development of approaches for assessment of core debris heat transfer and Control Rod Guide Tube (CRGT) cooling effectiveness in case of a Boiling Water Reactor (BWR) severe accident.
We consider a hypothetical scenario with stratified (metal layer atop) melt pool in the lower plenum.
Effective Convectivity Model (ECM) and Phase-Change ECM (PECM) are developed for the modeling of molten metal layer heat transfer.
The PECM model takes into account reduced convection heat transfer in mushy zone and compositional convection that enables simulations of noneutectic binary mixture solidification and melting.
The ECM and PECM are (i) validated against relevant experiments for both eutectic and noneutectic mixtures and (ii) benchmarked against CFD-generated data including the local heat transfer characteristics.
The PECM is then applied to the analysis of heat transfer in a stratified heterogeneous debris pool taking into account CRGT cooling.
The PECM simulation results show apparent efficacy of the CRGT cooling which can be utilized as Severe Accident Management (SAM) measure to protect the vessel wall from focusing effect caused by metallic layer.
American Psychological Association (APA)
Tran, Chi-Thanh& Kudinov, Pavel. 2013. The Effective Convectivity Model for Simulation of Molten Metal Layer Heat Transfer in a Boiling Water Reactor Lower Head. Science and Technology of Nuclear Installations،Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-455795
Modern Language Association (MLA)
Tran, Chi-Thanh& Kudinov, Pavel. The Effective Convectivity Model for Simulation of Molten Metal Layer Heat Transfer in a Boiling Water Reactor Lower Head. Science and Technology of Nuclear Installations No. 2013 (2013), pp.1-14.
https://search.emarefa.net/detail/BIM-455795
American Medical Association (AMA)
Tran, Chi-Thanh& Kudinov, Pavel. The Effective Convectivity Model for Simulation of Molten Metal Layer Heat Transfer in a Boiling Water Reactor Lower Head. Science and Technology of Nuclear Installations. 2013. Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-455795
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-455795