Numerical modeling of sneeze airflow and its validation with an experimental dataset
Numerical modeling of sneeze airflow and its validation with an experimental dataset
复制标题
喷嚏气流的数值建模及其实验数据集的验证
DOI：
10.1111/ina.13171
复制
发表时间：
2022
期刊：
影响因子：
5.8
通讯作者：
Han Mengtao
中科院分区：
文献类型：
--
作者：
Oh Wonseok;Ooka Ryozo;Kikumoto Hideki;Han Mengtao
在这项研究中，我们的目标是使用实验结果提供数据集来验证喷嚏气流。此外，还给出了实验结果中能够再现喷嚏气流的喷嚏模拟的边界条件。通过对粒子图像测速的实验结果进行集合平均分析，建立了验证数据集，并利用这些数据集探索了重现喷嚏气流的边界条件。由计算流体力学模拟再现的喷嚏气流，界面处的最大速度幅值范围男性为21.1~23.9m/S，女性为17.9~20.3m/S，均高于咳嗽时。与实验结果比较，总风量分布的均方根误差范围为0.19~0.23 m/S，标准点最大风速大小的误差范围为0.03~0.08 m/S，喷嚏总风量为0.36~0.48 L，较咳嗽风量偏低。因此，这项研究为计算流体动力学分析提供了重要的基本边界条件，并得到了实验结果的验证，以解释喷嚏传播感染颗粒的行为。
In this study, we aimed at providing datasets using experimental results to validate the sneeze airflow. In addition, the boundary conditions for the sneeze simulation that could reproduce the sneeze airflow in the experimental results are presented and reviewed. The validation datasets were created by performing ensemble‐average analysis with the experimental results of particle image velocimetry, and these were used to explore the boundary conditions to reproduce the sneeze airflow. As a result of the sneeze airflow reproduced by computational fluid dynamics simulation, the magnitude ranges of maximum velocity at the interface were observed to be 21.1–23.9 m/s for males and 17.9–20.3 m/s for females, which were higher than those of coughing. Compared with the experimental results, the root‐mean‐square error range for the overall airflow distribution was 0.19–0.23 m/s, whereas the error range for the magnitude of the maximum velocity at a criterion point was 0.03–0.08 m/s. The total sneezing airflow volume was in the range of 0.36–0.48 L, which was relatively low compared with that of coughing. Thus, this study provides important fundamental boundary conditions for computational fluid dynamics analysis, validated by experimental results, to interpret the spread of infectious particles by sneezing.