Mitigation of Micro-Droplet Ejections During Open Cabin Unit Operations Aboard ISS

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dc.creatorTurner, Caleb
dc.creatorWeislogel, Mark
dc.creatorGoodman, Jesse
dc.creatorMohler, Sam
dc.creatorMungin, Rihana
dc.creatorUngar, Eugene
dc.creatorBuchli, Jennifer
dc.date.accessioned2019-06-20T16:24:19Z
dc.date.available2019-06-20T16:24:19Z
dc.date.issued2019-07-07
dc.descriptionCaleb Turner, Portland State University, USA
dc.descriptionMark Weislogel, Portland State University, USA
dc.descriptionJesse Goodman, Portland State University, USA
dc.descriptionSam Mohler, Portland State University, USA
dc.descriptionRihana Mungin, Portland State University, USA
dc.descriptionEugene Ungar, National Aeronautics and Space Administration (NASA), USA
dc.descriptionJennifer Buchli, National Aeronautics and Space Administration (NASA), USA
dc.descriptionICES501: Life Support Systems Engineering and Analysis
dc.descriptionThe 49th International Conference on Environmental Systems was held in Boston, Massachusetts, USA on 07 July 2019 through 11 July 2019.
dc.description.abstractThe rupture and break-up of thin films, droplets, bubbles, and rivulets can produce tiny satellite droplet ejections. For example, when nearly any object is withdrawn from a liquid bath, the formation of an ever-thinning columnar rivulet eventually ruptures, ejecting a variety of satellite droplets that are often too small and too fast to observe by eye. In terrestrial environments such events are often of little concern due to the fact that gravity rapidly returns such drops to the liquid surface from which they came. This of course is not the case in low-g environments where during simple activities such as pipetting these satellite drops travel away from the liquid only to impact the surrounding surfaces leading to possible contamination of the working environment. In this work we demonstrate the variety of micro-droplet ejections formed during simple wet lab unit operations such as pipetting and how in the low-gravity environment such dynamics depend on system geometry, wettability, fluid properties, and withdraw rate. A large drop tower dataset is collected in support of regime maps organized by the appropriate dimensionless groups. The results can be exploited to guide mitigation strategies for high volume wet lab operations aboard spacecraft; i.e., manifold pipetting, sequencing, 3-D printing, and more.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES_2019_201
dc.identifier.urihttps://hdl.handle.net/2346/84432
dc.language.isoeng
dc.publisher49th International Conference on Environmental Systems
dc.subjectCapillary Fluidics
dc.subjectContamination mitigation
dc.subjectWet lab operations
dc.titleMitigation of Micro-Droplet Ejections During Open Cabin Unit Operations Aboard ISSen_US
dc.typePresentations

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