The TONUS CFD code for hydrogen risk analysis: Physical models, numerical schemes and validation matrix

Kudriakov, Sergey; Dabbene, F.; Studer, Etienne; Beccantini, A.; Magnaud, J. P.; Paillère, H.; Boutarfaïa, Ahmed; Bleyer, A.; Malet, J.; Porcheron, Emmanuel; Caroli, C.

doi:10.1016/j.nucengdes.2007.02.048

Cited by 65 publications

(17 citation statements)

References 5 publications

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“…7) was also transferred from the GASFLOW to the COM3D by reducing the cell length to approximately 0.25 m. Therefore, 5,931,678 hexahedral cells were generated for the hydrogen combustion in the grid model. The cell length was determined to resolve accurately the pressure Combustion Code TONUS CFD [17] COM3D [20] REACFLOW [18] CRECOM [19] Grid model wave propagation generated from the combusted region [25] and to model the important structures in the containment. The KYLCOMþ model with the Kawanabe turbulent flame speed model [20] was used to simulate the hydrogen flame propagation in the COM3D calculation.…”

Section: Analytical Activitiesmentioning

confidence: 99%

Research efforts for the resolution of hydrogen risk

Hong

Kim

Kang

et al. 2015

Nuclear Engineering and Technology

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a b s t r a c tDuring the past 10 years, the Korea Atomic Energy Research Institute (KAERI) has performed a study to control hydrogen gas in the containment of the nuclear power plants.Before the Fukushima accident, analytical activities for gas distribution analysis in experiments and plants were primarily conducted using a multidimensional code: the GASFLOW. After the Fukushima accident, the COM3D code, which can simulate a multidimensional hydrogen explosion, was introduced in 2013 to complete the multidimensional hydrogen analysis system. The code validation efforts of the multidimensional codes of the GASFLOW and the COM3D have continued to increase confidence in the use of codes using several international experimental data. The OpenFOAM has been preliminarily evaluated for APR1400 containment, based on experience from coded validation and the analysis of hydrogen distribution and explosion using the multidimensional codes, the GASFLOW and the COM3D. Hydrogen safety in nuclear power has become a much more important issue after the Fukushima event in which hydrogen explosions occurred. The KAERI is preparing a large-scale test that can be used to validate the performance of domestic passive autocatalytic recombiners (PARs) and can provide data for the validation of the severe accident code being developed in Korea.

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Section: Analytical Activitiesmentioning

confidence: 99%

Research efforts for the resolution of hydrogen risk

Hong

Kim

Kang

et al. 2015

Nuclear Engineering and Technology

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“…To extend this methodology to ITER configuration, the IRSN TONUS-CFD code [5] is used to evaluate the atmosphere conditions of the VV and the neighbouring tanks during the accident transient (i.e. temperature, pressure and gas composition in the different volumes), accounting for the presence of mitigation systems as inerting gas release or passive autocatalytic recombiners.…”

Section: Risk Of Explosion Of Gas-dust Mixturesmentioning

confidence: 99%

Progress of IRSN R&D on ITER Safety Assessment

et al. 2011

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The French ''Institut de Radioprotection et de Sûreté Nucléaire'' (IRSN), in support to the French ''Autorité de Sûreté Nucléaire'', is analysing the safety of ITER fusion installation on the basis of the ITER operator's safety file. IRSN set up a multi-year R&D program in 2007 to support this safety assessment process. Priority has been given to four technical issues and the main outcomes of the work done in 2010 and 2011 are summarized in this paper: for simulation of accident scenarios in the vacuum vessel, adaptation of the ASTEC system code; for risk of explosion of gas-dust mixtures in the vacuum vessel, adaptation of the TONUS-CFD code for gas distribution, development of DUST code for dust transport, and preparation of IRSN experiments on gas inerting, dust mobilization, and hydrogen-dust mixtures explosion; for evaluation of the efficiency of the detritiation systems, thermo-chemical calculations of tritium speciation during transport in the gas phase and preparation of future experiments to evaluate the most influent factors on detritiation; for material neutron activation, adaptation of the VESTA Monte Carlo depletion code. The first results of these tasks have been used in 2011 for the analysis of the ITER safety file. In the near future, this R&D global programme may be reoriented to account for the feedback of the latter analysis or for new knowledge.

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“…The TONUS CFD code [6], initially developed by CEA (France) for IRSN for PWR applications, is used to evaluate the VV atmosphere conditions during the accident transient (i.e. temperature, pressure and gas composition in the different VV volumes), accounting for the presence of mitigation systems as inertising gas release or passive autocatalytic recombiners.…”

Section: Tonus Cfd Codementioning

confidence: 99%