2024
DOI: 10.21203/rs.3.rs-4201542/v1
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Gravity and Human Respiration: Biophysical Limitations in Mass Transport and Exchange in Space

David Porterfield,
Som Dutta,
Dana Tulodziecki
et al.

Abstract: A major requirement for humans is a breathable atmosphere. In microgravity, despite environmental life support systems regulating air exchange, astronauts complain about air quality, with elevated CO2-levels resulting in detrimental health and performance effects. We extend extant accounts of human respiration to include the role of gravity and buoyancy. Using computational fluid dynamics, we demonstrate that the absence of biothermal convection in microgravity reduces airflow around the human body. This imp… Show more

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