Attachment of decay products of radon and thoron to environmental aerosols is an important process which govern the inhalation dose. This process is characterised by the attachment coefficient, that depends on size characteristics of aerosols and environmental parameters like temperature and extent of air turbulence. In the present work, CFD based simulations have been carried out to study the attachment behaviour of thoron decay product,²¹²Pb, with mono-disperse as well as poly-disperse aerosols in an experimental chamber. The variations of attachment coefficient with temperature and turbulence have been studied. The simulation results have been compared with data reported in literature.

氡和钍的衰变产物与环境气溶胶的附着是控制吸入剂量的重要过程。这个过程的特点是附着系数，它取决于气溶胶的尺寸特征和环境参数，如温度和空气湍流的程度。在目前的工作中，已经进行了基于 CFD 的模拟，以研究钍气衰变产物²¹² Pb 在实验室中与单分散和多分散气溶胶的附着行为。研究了附着系数随温度和湍流的变化。模拟结果与文献报道的数据进行了比较。