Nuclear
Nuclear power takes a strong position on the world stage: the 440 large size reactors operating at a total capacity of about 400 GWe produce about 14% of the total electricity produced in the world. In Europe alone, the share of electricity productio...
Papers: article
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G. Manzini, F. Parozzi, Nuclear Safety-Hydrogen Generation and Explosion Modeling, La Termotecnica, vol. LXIX, pp. 65-68, Luglio/Agosto-2015. Article European Union
The paper reports an overview of hydrogen – air explosions (indoor and outdoor) modeling and a first validation step of the explosion model using the lumped-parameter tool ECART, presenting a comparison with experimental data and results obtained by other computational tools like MELCOR.
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M. Klauck, S. Beck, G. Preusser, M. Sangiorgi, S. Morandi, A. Del Corno, et al., Generic Containment: Detailed comparison of containment simulations performed on plant scale, Annals of Nuclear Energy , vol. 74, pp. 165-172, Agosto-2014. Article European Union
This paper summarizes the results of international benchmark within the European SARNET2 project. The code-to-code benchmark analyses the thermos - hydraulic behavior of a Generic Containment, based on a German PWR (1300MWel), due to severe accident without hydrogen mitigation systems. The paper put in evidence the main results of the several steps of the benchmark ( run-0, run-1 e run-2)
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J. Malet, S. Mimouni, G. Manzini, J. Xiao, L. Vyskocil, N.B. Siccama, et al., Gas entrainment by one single French PWR spray, SARNET-2 spraybenchmark, Nuclear Engineering and Design, vol. 282, pp. 44-53, Dicembre-2014. Article European Union
The paper presents a benchmark performed in the frame of the SARNET-2 EU project dealing with momentum transfer between a real-scale PWR spray and the surrounding gas. It presents a description of the IRSN tests on the CALIST facility, the participating codes (8 contributions), code-experiment and code-to-code comparisons. It is found that droplet velocities are almost well calculated one meter below the spray nozzle, even if the spread of the spray is not recovered and the values of the entrained gas velocity vary really much from one code to another. Concerning sensitivity analysis, several ‘simplifications’ have been made by the contributors, especially based on the boundary conditions applied at the location where droplets are injected. It is shown here that such simplifications influence droplet and entrained gas characteristics.
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I. Kljenak, M. Kuznetsov, P. Kostka, L. Kubisova, M. Maltsev, G. Manzini, et al., Simulation of Hydrogen Deflagration Experiment - Benchmark Exercise with Lumped-Parameter Codes, Nuclear Engineering and Design , vol. 283, pp. 51-59, Luglio-2014. Article European Union
An experiment on hydrogen deflagration (Upward Flame Propagation Experiment – UFPE) was proposed by the Jozef Stefan Institute (Slovenia) and performed in the HYKA A2 facility at the Karlsruhe Institute of Technology (Germany). The experimental results were used to organise a benchmark exercise for lumped-parameter codes.
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