Sensors and exposition analyses for aerosol transport in dynamic situations

动态情况下气溶胶传输的传感器和暴露分析

• 批准号: 469048625
• 负责人: Professor Dr.-Ing. Christoph Egbers
• 金额: --
• 依托单位: Institut für Aeordynamik und Strömungstechnik (IAS)
• 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 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/469048625?language=en
• 关键词: Sensors; exposition; analyses; aerosol; transport

Within the planned project a novel methodology to study aerosol transport in highly dynamic situations involving many people shall be developed and applied. WG Hampel develops and deploys a new mobile counting device for Helium soap bubbles which can be carried by test persons and which counts small Helium bubbles emitted by a mobile bubble generator simulating spreader. The sensor is inexpensive, robust and remotely operated. It bases on a light-optical camera technique. Different experimental studies investigating situations in classrooms, in narrow corridors, group dynamics indoors and outdoors, installation of air purifiers in a class or seminar room as well as window opening ventilation scenarios will be carried out. We study the effective particle inhalation using the mobile sensors together with the macroscopic 3D particle transport in the room using the experimental Shake-the-Box Lagrangian particle tracking concept of WG Schröder and WG Egbers. The new experimental concept allows to study the effectiveness of protective measures such as masks, distance and ventilation with regard to the risk of infection to be assessed in realistic settings and enables in particular the future investigation of scenarios in public spaces, such as schools, public transport, cultural events, restaurants or sports facilities.

在计划的项目范围内，将开发和应用一种新的方法来研究涉及许多人的高度动态情况下的气溶胶传输。汉佩尔工作组开发并部署了一种新的移动氦肥皂气泡计数装置，该装置可供测试人员携带，并对由移动气泡发生器模拟散布器发出的小氦气泡进行计数。该传感器价格低廉，坚固耐用，并可远程操作。它基于一种光-光学相机技术。将进行不同的实验研究，调查教室、狭窄走廊中的情况、室内和室外的群体动态、在班级或研讨会房间安装空气净化器以及打开窗户的通风方案。我们使用WG Schröder和WG Egbers的实验Shake-the-Box Lagrangian粒子跟踪概念，研究了使用移动传感器的有效粒子吸入以及房间内宏观的3D粒子传输。新的实验概念允许研究口罩、距离和通风等防护措施关于感染风险的有效性，以便在现实环境中进行评估，特别是使今后能够调查学校、公共交通、文化活动、餐馆或体育设施等公共场所的情景。