About modeling of the corium jet penetrating the pool of volatile coolant under reactor vessel
2010 (English)In: Applied computer science, 2010, 89-95 p.Conference paper (Refereed)
The mathematical model developed and some results of its application to an element of a passive protection system against severe accidents at the nuclear power plant (NPP) with a water pool under reactor vessel for corium melt and particles' cooling are presented in the paper. This is an important element of a passive protection system against severe accidents at NPP, which must keep nuclear fuel and other radioactive materials (corium) inside the containment. The penetration behavior of a high-temperature corium jet into a pool of volatile coolant (water), with account of the vapor produced on a melt jet penetration, has been investigated. Success of the problem's solution determines an effectiveness and durability of the passive protection system against severe accidents. Therefore the results obtained may be useful for the development and calculation of such passive protection systems at the NPP. Except theoretical interest for the dynamics of multiphase flows, the problem is of interest for practical applications in nuclear power safety problems, which are probably the most important in further development of the nuclear power industry in the world. Present operation of the nuclear power plants (NPP) still considered by many countries as the highest priority energy source requires strict nuclear power safety substantiation. In the nuclear reactors of the third generation, which are necessary at the change to the operable reactors of the second generation, the passive systems (they are capable for work even under the conditions of the complete NPP de-energizing) must work perfect under any severe accident scenario, to localize emergency and prevent spreading of the radioactive fuel outside the containment.
Place, publisher, year, edition, pages
2010. 89-95 p.
, International Conference on Applied Computer Science - Proceedings, ISSN 1792-4863
Jet, Nuclear power safety, Passive system, Severe accident, Vapor, Volatile coolant
IdentifiersURN: urn:nbn:se:kth:diva-150315ScopusID: 2-s2.0-79959929216ISBN: 9789604742257OAI: oai:DiVA.org:kth-150315DiVA: diva2:742637
International Conference on Applied Computer Science, ACS, 15 September 2010 through 17 September 2010, Malta
QC 201409022014-09-022014-09-012014-09-02Bibliographically approved