Skip to Main content Skip to Navigation
Journal articles

Numerical and experimental study of the International Space Station crew quarters ventilation

Abstract : The current paper proposes a detailed study of the ventilation system of the crew quarters (CQ) aboard the International Space Station (ISS) in order to identify the ventilation system's capacity to reduce CO2 accumulation around an occupant. These results would enable the improvement of the ventilation system, thereby decreasing the health risks of the occupants. The ventilation flow fields are studied through numerical results which are validated with experimental Particle Image Velocimetry (PIV) measurements in a reduced-scale mock-up. The equivalence between the reduced scale experimental and the full-scale numerical results is obtained through a Reynolds-number based similitude criteria. This enabled the authors to validate the isothermal airflow in the full-scale numerical model with the experimental results of the water flow in the reduced-scale mock-up. Normalized numerical and experimental velocity profiles have been superposed and were found to be in good agreement. Both numerical and experimental models highlight a stagnation region in the centre of the CQ volume leading to a ventilation deficit of the astronaut's breathing zone. The results indicate that this stagnant region is a reason for the excess CO2 accumulation in the CQ, despite the high ventilation rate (>45 hourly air exchanges). To the author's best knowledge this is the first numerical study of the CQ ventilation system validated with reduced-scale experimental modelling. The paper's findings have implications in building air quality studies, suggesting that targeted ventilation is preferable to raw increased in flow rates.
Document type :
Journal articles
Complete list of metadata
Contributor : Laurent Jonchère <>
Submitted on : Thursday, June 17, 2021 - 9:07:01 AM
Last modification on : Friday, June 18, 2021 - 3:43:25 AM


 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2021-11-14

Please log in to resquest access to the document



Matei Razvan Georgescu, Amina Meslem, Ilinca Nastase, Mihnea Sandu. Numerical and experimental study of the International Space Station crew quarters ventilation. Journal of Building Engineering, Elsevier, 2021, 41, pp.102714. ⟨10.1016/j.jobe.2021.102714⟩. ⟨hal-03263171⟩



Record views