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Projects / Programmes source: ARIS

Modelling of steam explosions

Research activity

Code Science Field Subfield
2.13.00  Engineering sciences and technologies  Process engineering   

Code Science Field
P240  Natural sciences and mathematics  Gases, fluid dynamics, plasmas 
Keywords
steam explosion, multiphase flow, multiphase model, numerical simulation, experiment
Evaluation (rules)
source: COBISS
Researchers (7)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  21538  PhD Robert Bergant  Energy engineering  Junior researcher  2004 - 2005  42 
2.  15816  PhD Andrej Horvat  Energy engineering  Researcher  2004 - 2006  52 
3.  24075  Tanja Klopčič    Technical associate  2004 - 2007 
4.  16435  PhD Boštjan Končar  Energy engineering  Researcher  2004 - 2007  367 
5.  14572  PhD Matjaž Leskovar  Energy engineering  Head  2004 - 2007  434 
6.  19725  Andrej Sušnik    Technical associate  2004 - 2007 
7.  12057  PhD Iztok Tiselj  Energy engineering  Researcher  2004 - 2007  467 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,600 
Abstract
The question arising in several industries, in particular in foundries, paper mills, and nuclear industry is what happens if two liquids mix and the temperature of the first liquid is higher than the boiling temperature of the second one. The consequence of such a mixing can be a steam explosion. A strong enough steam explosion in the nuclear power plant could jeopardize the containment integrity and so lead to a direct release of radioactive material to the environment. The purpose of the research project is to develop a steam explosion model, which will be suited for modelling all four phases of a steam explosion (premixing, triggering, propagation, expansion) and will help finding answers on open questions regarding steam explosion understanding and modelling. Modelling of steam explosions is a challenging task, since a steam explosion is a complex coupled multi-component, multi-phase, multi-space-scale and multi-time-scale phenomenon. With the developed steam explosion model a number of steam explosion experiments will be analysed. Areas where better models are needed will be identified and better models proposed. Areas where more experimental data would be needed for better steam explosion understanding and model development will be identified and required experiments will be proposed. A proposal for the EU-sponsored free transnational access to the PLINIUS Corium platform at CEA, France will be prepared to perform in the KROTOS facility the most required steam explosion experiment with prototypic corium. The research project will be part of the 6.FP EU Network of Excellence SARNET (European Network on Water Reactor Severe Accident Research and Management) working programme, where also fuel-coolant interaction activities are planned.
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