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Computational Fluid Dynamics Ventilation Study for the Human Powered Centrifuge at the International Space StationThe Human Powered Centrifuge (HPC) is a facility that is planned to be installed on board the International Space Station (ISS) to enable crew exercises under the artificial gravity conditions. The HPC equipment includes a "bicycle" for long-term exercises of a crewmember that provides power for rotation of HPC at a speed of 30 rpm. The crewmember exercising vigorously on the centrifuge generates the amount of carbon dioxide of about two times higher than a crewmember in ordinary conditions. The goal of the study is to analyze the airflow and carbon dioxide distribution within Pressurized Multipurpose Module (PMM) cabin when HPC is operating. A full unsteady formulation is used for airflow and CO2 transport CFD-based modeling with the so-called sliding mesh concept when the HPC equipment with the adjacent Bay 4 cabin volume is considered in the rotating reference frame while the rest of the cabin volume is considered in the stationary reference frame. The rotating part of the computational domain includes also a human body model. Localized effects of carbon dioxide dispersion are examined. Strong influence of the rotating HPC equipment on the CO2 distribution detected is discussed.
Document ID
20120010530
Document Type
Conference Paper
Authors
Son, Chang H. (Boeing Co. Houston, TX, United States)
Date Acquired
August 26, 2013
Publication Date
January 1, 2012
Subject Category
Man/System Technology and Life Support
Report/Patent Number
JSC-CN-26311
Meeting Information
International Conference on Environmental Systems(San Diego, CA)
Funding Number(s)
CONTRACT_GRANT: NAS-10000
Distribution Limits
Public
Copyright
Public Use Permitted.

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