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Computational Fluid Dynamics Ventilation Study for the Human Powered Centrifuge at the International Space Station
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Author and Affiliation:
Son, Chang H.(Boeing Co., Houston, TX, United States)
Abstract: The 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.
Publication Date: Jan 01, 2012
Document ID:
20120010530
(Acquired Jul 09, 2012)
Subject Category: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
Report/Patent Number: JSC-CN-26311
Document Type: Conference Paper
Meeting Information: International Conference on Environmental Systems; 15-19 Jul. 2012; San Diego, CA; United States
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; United States
Contract/Grant/Task Num: NAS-10000
Financial Sponsor: NASA Johnson Space Center; Houston, TX, United States
Organization Source: Boeing Co.; Houston, TX, United States
Description: 9p; In English; Original contains color and black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution under U.S. Government purpose rights; under NASA contract NAS-10000
NASA Terms: CARBON DIOXIDE; COMPUTATIONAL FLUID DYNAMICS; HUMAN CENTRIFUGES; PHYSICAL EXERCISE; VENTILATION; AIR PURIFICATION; AIR FLOW; INTERNATIONAL SPACE STATION; ARTIFICIAL GRAVITY; EXERCISE PHYSIOLOGY; MULTI-PURPOSE LOGISTICS MODULES; LIFE SUPPORT SYSTEMS
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