CFD Study of Airflow Characteristics in the U.S. Laboratory and Node 2 with IMV Bypass Reconfiguration



Journal Title

Journal ISSN

Volume Title


48th International Conference on Environmental Systems


The International Space Station (ISS) ventilation capability is accomplished by circulating air within a module (intra-module ventilation) as well as by exchanging air between modules (inter-module ventilation, IMV). The IMV ventilation is designed to provide air supply from the modules equipped with the carbon dioxide removal systems and other Environmental Control and Life Support (ECLS) subsystems all over the Station. The objective of this study is to evaluate ISS air circulation characteristics for two IMV configurations: when the IMV system provides airflow from the Russian Orbital Segment to Node 2 (Case 1) or to U.S. Laboratory (Case 2). Two modules under consideration, U.S. Laboratory and Node 2, are included into the computational domain in the present Computational Fluid Dynamics analysis. The paper focuses on the ventilation performance for the cabin aisle way in perspective to the ISS ventilation requirements. The 3D computational data allowed concluding that there is no considerable risk of any stagnant zone formation for both the IMV configurations and the cabin air is characterized by velocities that are within the safe and comfortable range.


Chang Son, The Boeing Company
Nikolay Ivanov, Peter the Great St. Petersburg Polytechnic University
Evgueni Smirnov, Peter the Great St.Petersburg Polytechnic University
Denis Telnov, New Technologies and Services
ICES300: ECLSS Modeling and Test Correlations
The 48th International Conference on Environmental Systems was held in Albuquerque, New Mexico, USA on 08 July 2018 through 12 July 2018.


International Space Station, Heat Ventilation and Air-Conditioning (HVAC), Environmental Control and Life Support System (ECLSS), Numerical simulation, Computational Fluid Dynamics