Sensors and exposition analyses for aerosol transport in dynamic situations

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。WG Hampel开发并部署了一种新的移动的氦肥皂泡计数装置，该装置可由测试人员携带，并对模拟散布器的移动的气泡发生器发出的小氦气泡进行计数。该传感器价格低廉，坚固耐用，可远程操作。它基于光-光学照相技术。将进行不同的实验研究，调查教室，狭窄走廊，室内和室外的群体动态，在教室或研讨室安装空气净化器以及开窗通风方案的情况。我们研究了有效的颗粒吸入使用的移动的传感器与宏观的3D粒子运输在房间里使用的实验摇箱拉格朗日粒子跟踪的概念工作组施罗德和工作组Egbers。新的实验概念允许研究防护措施的有效性，如口罩，距离和通风，以评估在现实环境中的感染风险，特别是未来调查公共场所的情况，如学校，公共交通，文化活动，餐馆或体育设施。

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.