Spreading of aerosols in mixed convection in a generic passenger cabin
Final Report Abstract
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 passenger’s 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, scanning stereoscopic Particle Image Velocimetry measurement are planned to correlate the underlying volumetric flow fields with the aerosol spreading. 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.
Publications
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“Automatisierung eines Versuchsaufbaus zur Untersuchung von Strömungsstrukturen in Mischkonvektion”. TU Ilmenau.
C. Naumann et al.
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“Entwicklung eines Prototypen zur variablen Aerosolerzeugung sowie Definition und Test von Messmethoden zur zeitaufgelösten Vermessung der Partikelgrößenverteilung”. TU Ilmenau.
H. Ribitza
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“Measurements of large-scale circulations in mixed convection in a pressurized model room”. In: 20th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 11.-14. July. Lisbon.
M. Herzberg et al.
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“Numerische Simulation zum turbulenten Wärme- und Impulstransport bei gemischter thermischer Konvektion in der SCALEX-Anlage”. TU Ilmenau.
C. D. Sonfa
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The SCALEX facility – an apparatus for scaled fluid dynamical experiments. tm - Technisches Messen, 90(5), 296-309.
Sharifi, Ghazijahani Mohammad; Kästner, Christian; Valori, Valentina; Thieme, Alexander; Täschner, Kerstin; Schumacher, Jörg & Cierpka, Christian
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“Charakterisierung der Zuluftströmung in einem Passagierkabinenmodell”. In: Fachtagung ”Experimentelle Strömungsmechanik” 07.-09. Septmenber. München
M. Herzberg et al.
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“Experimental Investigation of Indoor Air Ventilation in a small-scale aircraft cabin model”. In: 5th International Conference on Building Energy and Environment, 25.-29. July. Montreal.
M. Herzberg et al.
