Publicado 6 números por año
ISSN Imprimir: 1940-2503
ISSN En Línea: 1940-2554
Indexed in
THERMAL RADIATION MODELING IN NUMERICAL SIMULATION OF MELT-COOLANT INTERACTION
SINOPSIS
This paper is concerned with radiation heat transfer modeling in multiphase disperse systems, which are formed in high-temperature melt-coolant interactions. This problem is important for complex interaction of the core melt with water in the case of a hypothetical severe accident in light-water nuclear reactors. The nonlocal effects of thermal radiation due to the semitransparency of water in the visible and near-infrared spectral ranges are taken into account by use of the recently developed large-cell radiation model (LCRM) based on the spectral radiation energy balance for single computational cells. In contrast to the local approach for radiative heating of water by particles (OMMopaque medium model), the LCRM includes radiative heat transfer between the particles of different temperatures. The regular integrated code VAPEX-P, intended to model the premixing stage of FCI, was employed for verification of the LCRM in a realistic range of the problem parameters. A comparison with the OMM and the more accurate P1 approximation showed that the LCRM can be recommended for the engineering problem under consideration. The effects of the temperature difference in solidifying particles are analyzed by use of the recently suggested approximation of transient temperature profile in the particles. It is shown that the effect of the temperature difference on heat transfer from corium particles to ambient water is considerable and should not be ignored in the calculations. An advanced computational model based on the LCRM for the radiation source function and subsequent integration of radiative transfer equation along the rays is also discussed.
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Dombrovsky Leonid A., An Extension of the Large-Cell Radiation Model for the Case of Semitransparent Nonisothermal Particles, Journal of Heat Transfer, 132, 2, 2010. Crossref
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Dombrovsky Leonid A., Nenarokomova Natalia B., Tsiganov Dmitry I., Zeigarnik Yuri A., Modeling of repeating freezing of biological tissues and analysis of possible microwave monitoring of local regions of thawing, International Journal of Heat and Mass Transfer, 89, 2015. Crossref
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Dombrovsky Leonid A., Reviznikov Dmitry L., Sposobin Andrey V., Radiative heat transfer from supersonic flow with suspended particles to a blunt body, International Journal of Heat and Mass Transfer, 93, 2016. Crossref
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Dombrovsky Leonid A., Steam explosion in nuclear reactors: Droplets of molten steel vs core melt droplets, International Journal of Heat and Mass Transfer, 107, 2017. Crossref
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Dombrovsky Leonid A., Dembele Siaka, Wen Jennifer X., A simplified model for the shielding of fire thermal radiation by water mists, International Journal of Heat and Mass Transfer, 96, 2016. Crossref
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Guo Junjun, Hu Fan, Luo Wei, Li Pengfei, Liu Zhaohui, A full spectrum k-distribution based non-gray radiative property model for fly ash particles, International Journal of Heat and Mass Transfer, 118, 2018. Crossref
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Dombrovsky Leonid A., Dembele Siaka, Wen Jennifer X., An infrared scattering by evaporating droplets at the initial stage of a pool fire suppression by water sprays, Infrared Physics & Technology, 91, 2018. Crossref
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Dombrovsky Leonid A., A model for solid bubbles formation in melt–coolant interaction, International Journal of Heat and Mass Transfer, 52, 5-6, 2009. Crossref
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Dombrovsky Leonid A., Scattering of Radiation and Simple Approaches to Radiative Transfer in Thermal Engineering and Biomedical Applications, in Springer Series in Light Scattering, 2019. Crossref
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Dombrovsky Leonid A., Kokhanovsky Alexander A., Solar heating of ice sheets containing gas bubbles, Journal of Quantitative Spectroscopy and Radiative Transfer, 250, 2020. Crossref
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Dombrovsky Leonid A., Kokhanovsky Alexander A., Solar Heating of the Cryosphere: Snow and Ice Sheets, in Springer Series in Light Scattering, 2021. Crossref
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Uršič Mitja, Meignen Renaud, Leskovar Matjaž, Analysis of film boiling heat transfer during fuel-coolant interaction, International Journal of Heat and Mass Transfer, 107, 2017. Crossref
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Kudinov Pavel, Davydov Mikhail, Development and validation of conservative-mechanistic and best estimate approaches to quantifying mass fractions of agglomerated debris, Nuclear Engineering and Design, 262, 2013. Crossref
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Kudinov Pavel, Karbojian Aram, Tran Chi-Thanh, Villanueva Walter, Agglomeration and size distribution of debris in DEFOR-A experiments with Bi2O3–WO3 corium simulant melt, Nuclear Engineering and Design, 263, 2013. Crossref
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Dombrovsky Leonid A., Kokhanovsky Alexander A., Deep Heating of a Snowpack by Solar Radiation, Frontiers in Thermal Engineering, 2, 2022. Crossref
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Grishchenko Dmitry, Galushin Sergey, Kudinov Pavel, Failure domain analysis and uncertainty quantification using surrogate models for steam explosion in a Nordic type BWR, Nuclear Engineering and Design, 343, 2019. Crossref
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Dombrovsky Leonid A., Kokhanovsky Alexander A., The influence of pollution on solar heating and melting of a snowpack, Journal of Quantitative Spectroscopy and Radiative Transfer, 233, 2019. Crossref
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Lisitsyn Aleksey V., Dombrovsky Leonid A., Mendeleyev Vladimir Ya., Grigorenko Anatoly V., Vlaskin Mikhail S., Zhuk Andrey Z., Near-infrared optical properties of a porous alumina ceramics produced by hydrothermal oxidation of aluminum, Infrared Physics & Technology, 77, 2016. Crossref