de With G, de Jong P
Nuclear Research and Consultancy Group (NRG), Utrechtseweg 310, NL-6800 ES Arnhem, The Netherlands.
Nuclear Research and Consultancy Group (NRG), Utrechtseweg 310, NL-6800 ES Arnhem, The Netherlands.
J Environ Radioact. 2016 Jul;158-159:56-63. doi: 10.1016/j.jenvrad.2016.02.019. Epub 2016 Apr 9.
Despite the considerable amount of work in the field of indoor thoron exposure, little studies have focussed on mitigation strategies to reduce exposure to thoron and its progeny. For this reason an advanced computer model has been developed that describes the dispersion and aerosol modelling from first principal using Computational Fluid Dynamics. The purpose of this study is to investigate the mitigation effects from air mixing on the progeny concentration and attachment with aerosols. The findings clearly demonstrate a reduction in thoron progeny concentration due to air mixing. The reduction in thoron progeny is up to 60% when maximum air mixing is applied. In addition there is a reduction in the unattached fraction from 1.2% under regular conditions to 0.3% in case of maximum mixing.
尽管在室内钍射气暴露领域已经开展了大量工作，但很少有研究聚焦于减少钍射气及其子体暴露的缓解策略。因此，已经开发了一种先进的计算机模型，该模型使用计算流体动力学从第一原理描述扩散和气溶胶建模。本研究的目的是研究空气混合对钍射气子体浓度和气溶胶附着的缓解效果。研究结果清楚地表明，空气混合可降低钍射气子体浓度。当应用最大空气混合时，钍射气子体的减少高达60%。此外，未附着部分从正常条件下的1.2%降至最大混合情况下的0.3%。
