The spread of pollutants caused by personnel walking is an important factor affecting the indoor environment. Investigating the disturbance of multiple personnel on the flow field is highly important. In this study, experimentation and numerical simulation are used to study the flow field and vortex structure of human wakes. Large eddy simulation (LES) is used to simulate the unsteady wake flow of single and single column personnel. The results show that due to secondary disturbances, the wake fluctuation region of single column personnel is larger than that of a single person, and the wake characteristics are more complex. Moreover, the wake vortex distribution of single column personnel is more discrete than that of a single person, and the vortex structure distribution region of single column personnel on the longitudinal section is twice that of a single person. The small-scale wake vortex is densely distributed, and the wake vortex dissipates faster.

中文翻译：

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室内单人和单列人员行走尾流特性对比分析

人员行走引起的污染物扩散是影响室内环境的重要因素。调查多人对流场的干扰非常重要。本研究通过实验和数值模拟来研究人体尾流的流场和涡流结构。采用大涡模拟（LES）来模拟单列人员的非定常尾流。结果表明，由于二次扰动，单纵队人员的尾流波动区域比单人更大，且尾流特征更加复杂。而且单纵队人员的尾流涡分布比单人的更离散，纵剖面上单纵队人员的涡结构分布区域是单人的2倍。小尺度尾涡分布密集，尾涡消散较快。