INVESTIGATION OF THE PREMIXING PHASE OF A STEAM EXPLOSION WITH HOT SPHERES

Citation
L. Meyer et al., INVESTIGATION OF THE PREMIXING PHASE OF A STEAM EXPLOSION WITH HOT SPHERES, Nuclear technology, 123(2), 1998, pp. 142-155
Citations number
24
Categorie Soggetti
Nuclear Sciences & Tecnology
Journal title
ISSN journal
00295450
Volume
123
Issue
2
Year of publication
1998
Pages
142 - 155
Database
ISI
SICI code
0029-5450(1998)123:2<142:IOTPPO>2.0.ZU;2-Z
Abstract
The multiphase, transient, and three-dimensional interaction of molten corium with water during the premixing phase of a steam explosion is simulated in the QUEOS facility using a barge number of smalt solid sp heres at temperatures up to 2300 K. The objective of the experiments i s to establish a database for testing the models of heat and momentum transfer in multifluid codes as well as the codes' capability to corre ctly describe multiphase flows. Three experiments with up to 10 kg of spheres made of molybdenum are discussed. Results from calculations wi th the NA-KA code are compared with experimental data. The agreement o btained is encouraging, and the calculations show that the intense mul tiphase interactions obtained in QUEOS constitute very critical and th us valuable test cases.