Abstract
The thermohydraulic behaviour of a mass of molten core is investigated, in the frame of PWR severe accidents studies. The corium may be located in the vessel lower head or in an external core-catcher. It is assumed to be present in the container instantaneously. Its motion is described by one velocity field. It may be homogeneous or made of two stratified fluids. The residual power is assumed to be constant and uniform in the UO{sub 2} phase. The radiative losses and the external water-cooling are taken into account. The thermal resistance of a peripheral crust is considered. The influence of the crust on the pool geometry may be studied. The wall behaviour is analysed by a conduction calculation. The interest of a sacrificial layer is underlined, so as the necessity of a multicomponent multiphase model to study the behaviour of a core catcher. It is also concluded that some experiments are needed for code validation about volume heated natural convection and multiphase flows. (author). 14 figs., 3 refs.
Pigny, S;
Grand, D;
Seiler, J M;
[1]
Durin, M
[2]
- CEA Centre d`Etudes de Grenoble, 38 (France). Dept. de Thermohydraulique et de Physique
- CEA Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Mecanique et de Technologie
Citation Formats
Pigny, S, Grand, D, Seiler, J M, and Durin, M.
Thermal hydraulic study of a corium molten pool.
France: N. p.,
1993.
Web.
Pigny, S, Grand, D, Seiler, J M, & Durin, M.
Thermal hydraulic study of a corium molten pool.
France.
Pigny, S, Grand, D, Seiler, J M, and Durin, M.
1993.
"Thermal hydraulic study of a corium molten pool."
France.
@misc{etde_10127738,
title = {Thermal hydraulic study of a corium molten pool}
author = {Pigny, S, Grand, D, Seiler, J M, and Durin, M}
abstractNote = {The thermohydraulic behaviour of a mass of molten core is investigated, in the frame of PWR severe accidents studies. The corium may be located in the vessel lower head or in an external core-catcher. It is assumed to be present in the container instantaneously. Its motion is described by one velocity field. It may be homogeneous or made of two stratified fluids. The residual power is assumed to be constant and uniform in the UO{sub 2} phase. The radiative losses and the external water-cooling are taken into account. The thermal resistance of a peripheral crust is considered. The influence of the crust on the pool geometry may be studied. The wall behaviour is analysed by a conduction calculation. The interest of a sacrificial layer is underlined, so as the necessity of a multicomponent multiphase model to study the behaviour of a core catcher. It is also concluded that some experiments are needed for code validation about volume heated natural convection and multiphase flows. (author). 14 figs., 3 refs.}
place = {France}
year = {1993}
month = {Dec}
}
title = {Thermal hydraulic study of a corium molten pool}
author = {Pigny, S, Grand, D, Seiler, J M, and Durin, M}
abstractNote = {The thermohydraulic behaviour of a mass of molten core is investigated, in the frame of PWR severe accidents studies. The corium may be located in the vessel lower head or in an external core-catcher. It is assumed to be present in the container instantaneously. Its motion is described by one velocity field. It may be homogeneous or made of two stratified fluids. The residual power is assumed to be constant and uniform in the UO{sub 2} phase. The radiative losses and the external water-cooling are taken into account. The thermal resistance of a peripheral crust is considered. The influence of the crust on the pool geometry may be studied. The wall behaviour is analysed by a conduction calculation. The interest of a sacrificial layer is underlined, so as the necessity of a multicomponent multiphase model to study the behaviour of a core catcher. It is also concluded that some experiments are needed for code validation about volume heated natural convection and multiphase flows. (author). 14 figs., 3 refs.}
place = {France}
year = {1993}
month = {Dec}
}