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Mommert, Michael and Volkmann, Andre and Werner, Felix and Schmeling, Daniel (2026) Aerosol dispersion of state-of-art ventilation concepts in passenger trains - a comparative study. Atmospheric Environment: X, 31 (100487), pp. 1-13. Elsevier. doi: 10.1016/j.aeaoa.2026.100487. ISSN 2590-1621.
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Official URL: https://www.sciencedirect.com/science/article/pii/S2590162126000754
Abstract
We report on an experimental study regarding the performance of state-of-the-art ventilation systems with different inlet positions with respect to the aerosol spread. For that, the spatial distribution of aerosol exposure was determined for six different source locations in a generic passenger compartment. This allowed us to evaluate the different concepts in terms of parameters such as contaminant removal efficiency, the number of seats above a certain threshold or the mean particle concentration in the breathing zone of the passengers. The results revealed strong differences in the local particle concentrations depending on the source position. Further, it was found that two ceiling-based concepts, microjet ceiling and ceiling mounted slot diffusers aimed at the passengers, have significant advantages over the other concepts, especially when it comes to the number of seats with aerosol exposures above certain thresholds. Yet, which concept is optimal still depends on the chosen threshold. The contaminant removal efficiency fluctuates only weakly around 0.5 for the different concepts, revealing mixing-ventilation principles for all concepts.
| Item URL in elib: | https://elib.dlr.de/224273/ | ||||||||||||||||||||
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| Document Type: | Article | ||||||||||||||||||||
| Additional Information: | Funded by the European Union. Views and opinion expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the Europe’s Rail Joint Undertaking. Neither the European Union nor the granting authority can be held responsible for them. The project FP4-Rail4EARTH is supported by the Europe’s Rail Joint Undertaking and its members. | ||||||||||||||||||||
| Title: | Aerosol dispersion of state-of-art ventilation concepts in passenger trains - a comparative study | ||||||||||||||||||||
| Authors: |
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| Date: | 17 July 2026 | ||||||||||||||||||||
| Journal or Publication Title: | Atmospheric Environment: X | ||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||
| Gold Open Access: | Yes | ||||||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||
| Volume: | 31 | ||||||||||||||||||||
| DOI: | 10.1016/j.aeaoa.2026.100487 | ||||||||||||||||||||
| Page Range: | pp. 1-13 | ||||||||||||||||||||
| Editors: |
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| Publisher: | Elsevier | ||||||||||||||||||||
| ISSN: | 2590-1621 | ||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||
| Keywords: | HVAC; passenger train; aerosol dispersion; ventilation | ||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
| HGF - Program: | Transport | ||||||||||||||||||||
| HGF - Program Themes: | Rail Transport | ||||||||||||||||||||
| DLR - Research area: | Transport | ||||||||||||||||||||
| DLR - Program: | V SC Schienenverkehr | ||||||||||||||||||||
| DLR - Research theme (Project): | V - NGT CSI | ||||||||||||||||||||
| Location: | Göttingen | ||||||||||||||||||||
| Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Ground Vehicles | ||||||||||||||||||||
| Deposited By: | Mommert, Michael | ||||||||||||||||||||
| Deposited On: | 07 Aug 2026 11:03 | ||||||||||||||||||||
| Last Modified: | 07 Aug 2026 11:03 |
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