To characterize the transport of respiratory pathogens during commercial air travel, Computational Fluid Dynamics simulations were performed to track particles expelled by coughing by a passenger assigned to different seats on a Boeing 737 aircraft. Simulation data were post-processed to calculate the amounts of particles inhaled by nearby passengers. Different airflow rates were used, as well as different initial conditions to account for random fluctuations of the flow field. Overall, 80% of the particles were removed from the cabin in 1.3 to 2.6 minutes, depending on conditions, and 95% of the particles were removed in 2.4 to 4.6 minutes. Reducing airflow increased particle dispersion throughout the cabin but did not increase the highest exposure of nearby passengers. The highest exposure was 0.3% of the nonvolatile mass expelled by the cough, and the median exposure for seats within 3 feet of the cough discharge was 0.1%, which was in line with recent experimental testing.

中文翻译：

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机舱咳嗽传输的计算流体动力学建模

为了表征商业航空旅行期间呼吸道病原体的运输，我们进行了计算流体动力学模拟，以跟踪被分配到波音 737 飞机上不同座位的乘客因咳嗽而排出的颗粒。对模拟数据进行后处理以计算附近乘客吸入的颗粒量。使用不同的气流速率以及不同的初始条件来解释流场的随机波动。总的来说，80% 的颗粒在 1.3 到 2.6 分钟内从机舱中清除，具体取决于条件，95% 的颗粒在 2.4 到 4.6 分钟内被清除。减少气流会增加整个机舱内的颗粒扩散，但不会增加附近乘客的最高暴露量。最高暴露量是咳嗽排出的非挥发性物质的 0.3%，