دورية أكاديمية
Progress in understanding key aerosol issues
| العنوان: | Progress in understanding key aerosol issues |
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| المؤلفون: | Herranz, L.E., Ball, J., Auvinen, A., Bottomley, D., Dehbi, A., Housiadas, C., Piluso, P., Layly, V., Parozzi, F., Reeks, M. |
| المساهمون: | Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Atomic Energy of Canada Limited (AECL), VTT Technical Research Centre of Finland (VTT), JRC Institute for Transuranium Elements Karlsruhe (ITU ), European Commission - Joint Research Centre Karlsruhe (JRC), Paul Scherrer Institute (PSI), National Center for Scientific Research "Demokritos" (NCSR), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), CESI RICERCA, Newcastle University Newcastle |
| المصدر: | Progress in Nuclear Energy ; https://hal.science/hal-02972636Test ; Progress in Nuclear Energy, 2010, 52 (1), pp.120-127. ⟨10.1016/j.pnucene.2009.09.013⟩ |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2010 |
| المجموعة: | HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
| مصطلحات موضوعية: | Aerosol transport, CFD models, Code validation, Complex geometries, Complex structure, Concrete cracks, Concrete wall, Current capability, Data reviews, Dry and wet, Empirical data, Experimental data, Experimental program, Further development, Integral experiments, International projects, Micro-scales, Particle depositions, Primary circuits, Random Walk, Re-suspension, Remobilization, Risk scenarios, Severe accident, Source term, Source terms, Stochastic treatment, Turbulence interactions, Accidents, Atmospheric aerosols |
| الوصف: | International audience ; The 6th FWP SARNET project launched a set of studies to enhance understanding and predictability of relevant-risk scenarios where uncertainties related to aerosol phenomena were still significant: retention in complex structures, such as steam generator by-pass SGTR sequences or cracks in concrete walls of an over-pressurised containment, and primary circuit deposit remobilization, either as vapours (revaporisation) or aerosols (resuspension). This paper summarizes the major advances achieved. Progress has been made on aerosol scrubbing in complex structures. Models based on empirical data (ARISG) and improvements to previous codes (SPARC) have been proposed, respectively, for dry and wet aerosol retention, but, further development and validation remains, as was noted during the ARTIST international project and potential successors. New CFD models for particle-turbulence interactions have been developed based on random walk stochastic treatments and have shown promise in accurately describing particle deposition rates in complex geometries. Aerosol transport in containment concrete cracks is fairly well understood, with several models developed but validation was limited. Extension of such validation against prototypic data will be feasible through an ongoing joint experimental program in the CEA COLIMA facility under the 6th Framework PLINIUS platform. Primary deposit revaporisation has been experimentally demonstrated on samples from the Phebus-FP project. Data review has pinpointed variables affecting the process, particularly temperature. Available models have been satisfactorily used to interpret separate-effect tests, but performing integral experiments, where revaporisation is likely combined with other processes, still pose a difficult challenge. Further experimental data as well as modelling efforts seem to be necessary to get a full understanding. Resuspension, sometimes referred to as mechanical remobilization, has been recently addressed in SARNET and although a set of models ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-02972636; https://hal.science/hal-02972636Test |
| DOI: | 10.1016/j.pnucene.2009.09.013 |
| الإتاحة: | https://doi.org/10.1016/j.pnucene.2009.09.013Test https://hal.science/hal-02972636Test |
| رقم الانضمام: | edsbas.A3D18F1E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.pnucene.2009.09.013 |
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