国際宇宙ステーションのインスタグラム(iss) - 7月4日 21時43分

"Capillary flow experiment – it’s amazing how they can get fluid to flow just by changing the shape of the container." #Swanny

Liquids behave differently in space than they do on Earth, so containers that hold, transport, or process liquids must be designed carefully to work in microgravity. Capillary Flow Experiment -2 (CFE-2) determines the critical wetting conditions for screens and perforated plates for perfectly wetting fluids. The impact of such ‘porous substrates’ has immediate implications to the design of passive geometries to manage highly wetting fuels, cryogens, thermal fluids, and contaminated aqueous solutions for urine processing. The unique vane gap critical wetting phenomena is greatly complicated by the presence of three-dimensional (3-D) porous walls. On Earth capillary action allows small amounts of liquid to flow up and into tight spaces despite the effects of gravity. New miniature medical devices, known as lab-on-a-chip technologies, exploit this phenomenon to draw blood or other fluids into essentially miniature diagnostic systems. CFE-2 improves our understanding of how capillary forces work in a variety of system geometries including the open spaces within porous materials such as sand and soil, wicks and sponges. NASA PAO

Photo credit: NASA 265B3600

#nasa #nasajsc #spacestation #internationalspacestation #explore #exploration #spacegram #exp40 #science #capillary

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