Modeling of heat transfer and solidification in LIVE L3A experiment

Pham, Q.T.; Seiler, J.M.; Combeau, Hervé; Gaus-Liu, X.; Kretzschmar, Frank; Miassoedov, A.

doi:10.1016/j.ijheatmasstransfer.2012.11.030

Cited by 14 publications

(4 citation statements)

References 21 publications

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“…This result corroborates the conclusions given by (Combeau et al, 2010;Pham et al, 2013;Seiler, 1995).…”

Section: Solidification Transient (V* < 0)supporting

confidence: 92%

“…The interface problem for in-vessel retention has thus been resolved. Specific experiments have been performed to validate this conclusion in a steady state Pham et al, 2013;Asmolov et al, 2001;Buck et al, 2010). More recently, a theoretical model has been developed to calculate the time delay for filling the mushy zone under transient conditions in a constant temperature gradient (Combeau et al, 2010).…”

Section: Problem Formulationmentioning

confidence: 91%

See 1 more Smart Citation

Transient interface temperature on a vertical surface in multi-component solid–liquid systems with volume heating. Application to various severe accident situations

Seiler

Combeau

2014

Nuclear Engineering and Design

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“…This result corroborates the conclusions given by (Combeau et al, 2010;Pham et al, 2013;Seiler, 1995).…”

Section: Solidification Transient (V* < 0)supporting

confidence: 92%

Section: Problem Formulationmentioning

confidence: 91%

Transient interface temperature on a vertical surface in multi-component solid–liquid systems with volume heating. Application to various severe accident situations

Seiler

Combeau

2014

Nuclear Engineering and Design

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“…Crust formation was made available in many experiments, but the transient growth behavior was only investigated in LIVE experiments (Pham et al, 2013) and more detailed information is needed. Moreover, a distinctive feature of corium is the characteristics of non-eutectic multi-component and large solidus-liquidus temperature range.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Natural convection heat transfer in corium pools: A review work of experimental studies

Zhang

Zhou

Zhang

et al. 2015

Progress in Nuclear Energy

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“…The above equations for energy and species conservation include additional interfacial terms, the details of which shall be discussed in Section 2.4, as to the authors knowledge, this has not been discussed thoroughly in the literature. Otherwise, this model is a "standard" plane front solidification model (see, for instance, [14] for analytical solutions in the binary case with a linearized liquidus curve) that has been used in [15] for the interpretation of the LIVE L3A test.…”

Section: Macroscopic Conservation Equationsmentioning

confidence: 99%

On the use of CALPHAD-based enthalpy-temperature relations in suboxidized corium plane front solidification modelling

Tiwari

Tellier

2018

Annals of Nuclear Energy

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The knowledge of in-vessel corium behaviour and associated risk of vessel failure are matters of prime interest within the framework of Severe Accident studies in a Light Water Reactor. Core meltdown during a severe accident results into formation of a corium pool at the bottom of the reactor vessel. This corium pool undergoes a density dependent liquid separation, thus exhibiting stratification into different phases. The distribution of phases depends on the time since the phase density depends on both temperature and composition of the phases. The evolution of stratification determines the impact of heat flux distribution at the lateral vessel wall, thereby determining the chances of success of the in-vessel retention strategy. Within integral codes, the modelling of corium behaviour involves the coupling between lumped parameter thermal models and thermochemical models. Integral thermal models consist of mass and energy conservation equations that require inputs related to thermochemical properties of the materials, which are closely related to the state variables. In particular, the closure of energy conservation equations requires enthalpy-temperature relations. In the framework of multicomponent systems, the dependence of such relations to chemical composition is of importance and should be treated adequately to obtain a more accurate description of the phases depicted by the model. An approach to do so is to keep a general formulation of energy conservation equations in terms of specific enthalpies instead of substituting simplified enthalpy-temperature relations on a case-by-case basis in order to obtain models with an explicit temperature formulation. The enthalpy-temperature relation is then considered as an "Equation-of-State" (EOS) that can be written as: H : T, (w j) j∈S → h along with its reciprocal relation T : h, (w j) j∈S → T where (w j) j∈S is the composition of the phase in terms of species mass fraction, h the mass enthalpy and T the temperature. The present study seeks to explore the use of CALPHAD-based enthalpy temperature relations in the modelling of suboxidized in-vessel corium plane front solidification. Along with theoretical considerations on the equations formulation, this paper discusses the numerical results based on a model developed in the PROpagation of CORium (PROCOR) platform interfaced with the Open-Calphad thermodynamic software.

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Modeling of heat transfer and solidification in LIVE L3A experiment

Cited by 14 publications

References 21 publications

Transient interface temperature on a vertical surface in multi-component solid–liquid systems with volume heating. Application to various severe accident situations

Transient interface temperature on a vertical surface in multi-component solid–liquid systems with volume heating. Application to various severe accident situations

Natural convection heat transfer in corium pools: A review work of experimental studies

On the use of CALPHAD-based enthalpy-temperature relations in suboxidized corium plane front solidification modelling

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