Flow and contaminant transport in an airliner cabin induced by a moving body: Model experiments and CFD predictions |
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| Authors: | Stephane B Poussou Sagnik Mazumdar Michael W Plesniak Paul E Sojka Qingyan Chen |
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| Institution: | 1. National Air Transportation Center of Excellence for Research in the Intermodal Transport Environment (RITE), School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, IN 47907, USA;2. Department of Mechanical and Aerospace Engineering, The George Washington University, Academic Center, Washington, DC 20052, USA;1. School of Mechanical Engineering, Tongji University, Cao''an Road 4800, Shanghai 201804, China;2. East China Architectural Design & Research Institute, Hankou Road 151, Shanghai 200002, China;1. Department of Architectural and Civil Engineering, City University of Hong Kong, Hong Kong Special Administrative Region;2. Division of Building Science and Technology, City University of Hong Kong, Hong Kong Special Administrative Region |
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| Abstract: | The effects of a moving human body on flow and contaminant transport inside an aircraft cabin were investigated. Experiments were performed in a one-tenth scale, water-based model. The flow field and contaminant transport were measured using the Particle Image Velocimetry (PIV) and Planar Laser-Induced Fluorescence (PLIF) techniques, respectively. Measurements were obtained with (ventilation case) and without (baseline case) the cabin environmental control system (ECS). The PIV measurements show strong intermittency in the instantaneous near-wake flow. A symmetric downwash flow was observed along the vertical centerline of the moving body in the baseline case. The evolution of this flow pattern is profoundly perturbed by the flow from the ECS. Furthermore, a contaminant originating from the moving body is observed to convect to higher vertical locations in the presence of ventilation. These experimental data were used to validate a Computational Fluid Dynamic (CFD) model. The CFD model can effectively capture the characteristic flow features and contaminant transport observed in the small-scale model. |
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