4种气溶胶粒子运输模型在室内空气环境中应用的性能比较
Performance comparison of four aerosol particle transport models used in indoor air environment
摘要：
介绍了4种气溶胶粒子运输模型，即拉格朗日粒子追踪模型（LPTM)、普通滑移通量模型（ODFM）、修正的滑移通量模型（MDFM）及被动标量组分输运模型（PSSTM）。在双区域实验室内分别用4种气溶胶粒子运输模型模拟了粒径为1～5 μm粒子的动态分布，并与实验数据进行了比较。结果显示，通过4种粒子运输模型得到的粒子分布结果近似一致。4种粒子模型占用的计算机内存和消耗的纯计算时间有明显不同。
Abstract：
Presents four transport models of aerosol particles, including Lagrangian particle tracking model (LPTM), ordinary drift-flux model (ODFM), modified drift-flux model (MDFM) and passive scalar species transport model (PSSTM). Simulates the dynamic distributions of particles with 1 to 5 μm diameter by four aerosol particle transport models in a two-zone experimental chamber, respectively, and compares the simulation results with the measured data. The results show that the four particle transport models can generally obtain nearly similar results consistent with the measured ones. The overhead in the computer memory resources and the pure computation time are quite distinct when applying the four particle models.
Keywords:aerosol particle, transport model, indoor air environment, particle distribution, mass concentration