Dynamic dose assessment by Large Eddy Simulation of the near-range atmospheric dispersion

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Abstract

In order to account for the variability in the wind field, Large-Eddy Simulation (LES) is used to assess the time-evolution of the near-range atmospheric dispersion of radioactive gases. To evaluate the gamma dose rates from cloud shine at ground level, it is coupled to a gamma dose rate model that is based on the point-kernel method. Using this coupled model, it is illustrated that the variability in the wind field can lead to dose estimates that are underestimated by up to a factor of four when conventional long-term measurements are used to estimate the dose from short-term exposures.

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Original languageEnglish
Pages (from-to)165-178
JournalJournal of Radiological protection
Volume35
Issue number1
DOIs
Publication statusPublished - 31 Jan 2015

Keywords

  • dose assessment, dispersion, Large Eddy Simulation, atmospheric boundary layer

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