Computational and Experimental Studies of Mixing of a Light Gas in the ERCOSAM–SAMARA Projects

Bakhmet’ev, A. M.; Bol’shukhin, M. A.; Kamnev, M. A.; Khizbullin, A. M.; Tyurikov, O.

doi:10.1007/s10512-017-0292-2

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…With the development of computer resources, numerical simulation through computer simulation platforms has become an important means of hydrogen risk research in containment. Filippov and Bakhmet'ev et al verified the relevant models in FLUENT and KUPOL-MT programs [19,20]. Fernández-Cosials et al used the IBE-3 experiment at the PANDA experimental facility to verify the GOTHIC program based on the gas mixing process [21].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Environmental Characteristics of Containment in Severe Accident of Marine Nuclear Power Plant

Xu,

Liu,

Chen

et al. 2023

Energies

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With the reliance on ocean resources, the nuclear power powers have set their sights on marine nuclear power plants to break through the bottleneck of energy supply for the development of ocean resources. In this paper, the computational fluid dynamics software ANSYS CFX 2021 is used to simulate the TOSQAN benchmark experiment. Three different turbulence models, the k−ε model, RNG k−ε model, and SST model, are selected to analyze the adaptability of the turbulence model. The simulation results are compared with the benchmark experimental results, and the selected numerical calculation model is used to analyze the influence of vapor on the pressure, temperature, hydrogen distribution, and hydrogen risk in the containment space when a hypothetical serious accident occurs in a marine nuclear power plant. The results show that the results simulated with the k−ε turbulence model are closer to the benchmark experimental results. Vapor has no obvious effect on the response speed of pressure balance at each position in the closed containment space, and the condensation of the vapor wall can effectively reduce the pressure peak in the closed containment space. The existence of vapor and the increase in vapor concentration will increase the temperature in the closed containment space. The condensation of vapor on the wall surface will cause the temperature in the containment space to have a peak value, which can effectively reduce the temperature in the containment space. Vapor will promote the mixing of gas in the containment space and make the hydrogen distribution tend to be uniform. The presence of vapor and the increase in vapor concentration can reduce the hydrogen risk in the containment space, but the condensation of vapor may increase the hydrogen risk in the containment space.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Environmental Characteristics of Containment in Severe Accident of Marine Nuclear Power Plant

Xu,

Liu,

Chen

et al. 2023

Energies

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“…9: Containment System. Revision C. April, 2001; [27][28][29][30]). Данную систему включают в ходе аварии при начале повреждения активной зоны для повышения концентрации пара и инертизации состава атмосферы.…”

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Passive autocatalitic recombiner characteritics calculation during severe accident on AES-2006 NPP

Сорокін

2020

Vescì Akademìì navuk Belarusì. Seryâ fizika-tehničnyh navuk

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A modern NPP is equipped by containment to hold radioactive substances and ionizing radiation bounded as design margins prescribe. Hydrogen mitigation system is used to protect containment against hydrogen fire and detonation. The system includes a scope of passive autocatalitic recombiners. Hydrogen is transformed into water, passing through said recombiners. The reaction occurs on catalyst surface. The main catalyst material is a palladium doped platinum. Hydrogen mitigation system parameters during severe accident are of interest. Wise admitted for NPP full scale tests are impossible, so the main analysis are calculations. Recombiner consists of catalytic block and stuck. The stuck provides reagents feeding and products evacuation enhancing natural convection transport. A model for calculations is suggested for recombiner with a plate-type catalyst block. The two free parameters of the model are chemical reaction intensity on catalyst and unit drag. Said parameters are estimated experimental data based on. Passive autocatalitic recombiner characteritics during severe ac- cident on AES-2006 NPP are calculated. The unit capacity is found not less that specification points. Catalyst temperatures, even the mean one, are above 500 °С, exhaust jet temperature exceeds 150 °С. Hydrogen content is high in the jet. Capacity increases linearly with hydrogen concentration at the unit entrance. Atmospheric temperature influence is low. Hydrogen mitigation system overall capacity is constant for uniform or not uniform hydrogen distribution in the containment. The calculated data may be used for recombiner work estimation during accident on AES-2006 NPP.

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OKBM Afrikantov Research and Testing Complex: From Creation to the Present Day

Babushkin¹,

Bakhmet’ev²,

Vasil’ev³

et al. 2020

At Energy

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Computational and Experimental Studies of Mixing of a Light Gas in the ERCOSAM–SAMARA Projects

Cited by 5 publications

References 3 publications

Numerical Simulation of Environmental Characteristics of Containment in Severe Accident of Marine Nuclear Power Plant

Numerical Simulation of Environmental Characteristics of Containment in Severe Accident of Marine Nuclear Power Plant

Passive autocatalitic recombiner characteritics calculation during severe accident on AES-2006 NPP

OKBM Afrikantov Research and Testing Complex: From Creation to the Present Day

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