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论文类型：会议论文
发表时间：2017-04-07
收录刊物：EI、CPCI-S
卷号：118
页面范围：184-188
关键字：particle pollution; underground parking lot; natural wind; numerical simulation
摘要：Nanoparticles have been demonstrated to have severely adverse impact on human health. As underground parking lot is a typical enclosed space with huge amount of vehicle-related particles, particle diffusion and pollution should be of great importance. The study employed a three-dimensional numerical model to simulate particle concentration distribution under transient natural wind through the entrance of the underground parking lot. The simulation results demonstrated that particle diffusion was controlled by natural wind through the entrance when vehicle stopped exhaust. Natural wind is an effective way to dilute nanoparticles exhausted by vehicles and contributed to a more uniform distribution of nanoparticles near the entrance in the parking lot. The results could provide fundamentals for the future application of ventilation design, and can be used to assess human exposure to vehicle particle pollutants at underground parking facilities. (C) 2017 The Authors. Published by Elsevier Ltd