Numerical Study of Carbon Dioxide Transport Problem for the Open and Lower Airflow Space in the ISS Module

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2023 International Conference on Environmental Systems

The current contribution deals with the problem of possible high level of the carbon dioxide concentration when a crewmember works near or inside an open rack where the airflow is less than in the cabin. The Computational Fluid Dynamics (CFD) model considers the U.S. Laboratory with a port rack open. A crewmember is modeled as a localized source of the carbon dioxide. The paper presents examination of the ability of the current U.S. Laboratory ventilation scenario to prevent potentially dangerous carbon dioxide bubble formation near a crewmember staying at the same position for a long period. The focus of the discussion is on the carbon dioxide spatial/temporal variations with respect to working crewmember safety and comfort.

Chang Son, The Boeing Company, USA
Nikolay Ivanov, New Technologies and Services, Russia
Evgueni Smirnov, New Technologies and Services, Russia
Denis Telnov, Peter the Great St.Petersburg Polytechnic University, Russia
ICES300: ECLSS Modeling and Test Correlations
The 52nd International Conference on Environmental Systems was held in Calgary, Canada, on 16 July 2023 through 20 July 2023.
International Space Station, Heating Ventilation and Air-Conditioning (HVAC), Environmental Control and Life Support System (ECLSS), Numerical simulation, Computational Fluid Dynamics