Spreading of aerosols in mixed convection in a generic passenger cabin

普通客舱内混合对流气溶胶的传播

• 批准号: 468826999
• 负责人: Professor Dr.-Ing. Christian Cierpka
• 金额: --
• 依托单位: Technische Thermodynamik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2021
• 资助国家: 德国
• 起止时间: 2020-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/468826999?language=en
• 关键词: Spreading; aerosols; mixed; convection; generic

Air conditioning of passenger cabins in aircraft or trains aims always to generate a comfortable and safe environment with the appropriate temperature. Due to the heat load of the passengers natural convection is superimposed to the forced convection by the ventilation system. Thus very complex and often unstable flow structures occur, which affect the aerosol spreading from local sources and may lead to regions of higher aerosol concentrations and thus a higher risk of virus spreading. To understand the flow physics the project aims to optically measure the spreading of aerosols from local sources (passenger) in a downscaled model cabin under elevated pressures in the unique SCALEX-facility. In addition stereoscopic PIV measurement are planned to elaborate on the underlying flow fields. In contrast to previous studies, which use two-dimensional models the generic model cabin features a three-dimensional arrangement. The results of the project are intended to further improve future safety concepts for safe traveling.

飞机或火车客舱的空调始终旨在产生具有适当温度的舒适和安全的环境。由于乘客的热负荷，自然对流被通风系统叠加到强制对流上。因此，出现了非常复杂且常常不稳定的流动结构，这影响了从局部来源传播的气溶胶，并可能导致气溶胶浓度较高的区域，从而导致病毒传播的风险较高。为了了解流动物理学，该项目的目的是光学测量气溶胶的扩散从当地来源（乘客）在一个缩小的模型舱在独特的SCALEX设施的高压下。此外，立体PIV测量计划阐述了底层流场。与以前使用二维模型的研究相比，通用模型舱具有三维布置。该项目的成果旨在进一步改善未来安全出行的安全概念。