Atmospheric Transport Modeling with 3D Lagrangian Dispersion Codes Compared with SF6 
      Tracer Experiments at Regional Scale

Van Dorpe, François; Iooss, Bertrand; Semenov, Vladimir; Sorokovikova, Olga; Fokin, Alexey; Margerit, Yves

doi:https://doi.org/10.1155/2007/30863

Science and Technology of Nuclear Installations

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Research Article | Open Access

Volume 2007 | Article ID 030863 | https://doi.org/10.1155/2007/30863

Atmospheric Transport Modeling with 3D Lagrangian Dispersion Codes Compared with SF6 Tracer Experiments at Regional Scale

François Van Dorpe,¹Bertrand Iooss,²Vladimir Semenov,³Olga Sorokovikova,³Alexey Fokin,³and Yves Margerit⁴

Academic Editor: Giorgio Galassi

Received09 Mar 2007

Accepted10 May 2007

Published27 Jun 2007

Abstract

The results of four gas tracer experiments of atmospheric dispersion on a regional scale are used for the benchmarking of two atmospheric dispersion modeling codes, MINERVE-SPRAY (CEA), and NOSTRADAMUS (IBRAE). The main topic of this comparison is to estimate the Lagrangian code capability to predict the radionuclide atmospheric transfer on a large field, in the case of risk assessment of nuclear power plant for example. For the four experiments, the results of calculations show a rather good agreement between the two codes, and the order of magnitude of the concentrations measured on the soil is predicted. Simulation is best for sampling points located ten kilometers from the source, while we note a divergence for more distant points results (difference in concentrations by a factor 2 to 5). This divergence may be explained by the fact that, for these four experiments, only one weather station (near the point source) was used on a field of 10 000 km2, generating the simulation of a uniform wind field throughout the calculation domain.

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Copyright

Copyright © 2007 François Van Dorpe et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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