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@ARTICLE{DomnguezBugarn:972086,
      author       = {Domínguez-Bugarín, Araceli and Jiménez, Miguel-Ángel
                      and Reinecke, Ernst-Arndt and Jiménez, Gonzalo},
      title        = {{PARUPM}: {A} simulation code for passive auto-catalytic
                      recombiners},
      journal      = {EPJ Nuclear Sciences $\&$ Technologies},
      volume       = {8},
      issn         = {2491-9292},
      address      = {Les Ulis},
      publisher    = {EDP Sciences},
      reportid     = {FZJ-2023-01055},
      pages        = {32 -},
      year         = {2022},
      abstract     = {In the event of a severe accident with core damage in a
                      water-cooled nuclear reactor, combustible gases (H2 and
                      possibly CO) get released into the containment atmosphere.
                      An uncontrolled combustion of a large cloud with a high
                      concentration of combustible gases could lead to a threat to
                      the containment integrity if concentrations within their
                      flammability limits are reached. To mitigate this
                      containment failure risk, many countries have proceeded to
                      install passive auto-catalytic recombiners (PARs) inside
                      containment buildings. These devices represent a passive
                      strategy for controlling combustible gases, since they can
                      convert H2 and CO into H2O and CO2, respectively. In this
                      work, the code PARUPM developed by the Department of Energy
                      Engineering at the UPM is described. This work is part of
                      the AMHYCO project (Euratom 2014–2018, GA No. 945057)
                      aiming at improving experimental knowledge and simulation
                      capabilities for the H2/CO combustion risk management in
                      severe accidents (SAs). Thus, enhancing the available
                      knowledge related to PAR operational performance is one key
                      point of the project. The PARUPM code includes a
                      physicochemical model developed for the simulation of
                      surface chemistry, and heat and species mass transfer
                      between the catalytic sheets and gaseous mixtures of
                      hydrogen, carbon monoxide, air, steam and carbon dioxide.
                      This model involves a simplified Deutschmann reaction scheme
                      for the surface combustion of methane, and the Elenbaas
                      analysis for buoyancy-induced heat transfer between parallel
                      plates. Mass transfer is considered using the heat and mass
                      transfer analogy. By simulating the recombination reactions
                      of H2 and CO inside the catalytic section of the PAR, PARUPM
                      allows studying the effect of CO on transients related to
                      accidents that advance towards the ex-vessel phase. A
                      thorough analysis of the code capabilities by comparing the
                      numerical results with experimental data obtained from the
                      REKO-3 facility has been executed. This analysis allows for
                      establishing the ranges in which the code is validated and
                      to further expands the capabilities of the simulation code
                      which will lead to its coupling with thermal-hydraulic codes
                      in future steps of the project.},
      cin          = {IEK-14},
      ddc          = {600},
      cid          = {I:(DE-Juel1)IEK-14-20191129},
      pnm          = {1422 - Beyond Design Basis Accidents and Emergency
                      Management (POF4-142)},
      pid          = {G:(DE-HGF)POF4-1422},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000890588900002},
      doi          = {10.1051/epjn/2022046},
      url          = {https://juser.fz-juelich.de/record/972086},
}