Proboscis container shapes for the USML-2 interface configuration experiment
- Univ. of California, Berkeley, CA (United States)
- Stanford Univ., CA (United States)
- NASA Lewis Research Center, Cleveland, OH (United States)
Small changes in container shape or in contact angle can give rise to large shifts of liquid in a microgravity environment. Such behavior suggests a means for managing fluids in microgravity and, as one specific possible application, for the accurate determination of contact angle. In connection with this application, the authors discuss certain containers designed for the forthcoming USML-2 Glovebox Interface Configuration Experiment (ICE) and depict their behavior in preliminary drop tower experiments. The containers are in the form of a circular cylinder with two diametrically opposed {open_quotes}proboscis{close_quotes} protrusions. These shapes are based on the canonical (single) proboscis containers introduced mathematically, which have the properties in the absence of gravity that (i) fluid rises arbitrarily high over the entire proboscis for contact angles less than or equal to a critical value and (ii) the size of the proboscis can be made relatively as large a portion of the container cross section as desired. These properties allow overcoming some of the practical limitations of wedge containers; for the latter too little fluid may participate in the shift at a critical contact angle to be easily observable. The authors include some background material, where computational results for the double proboscis containers are presented.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 114564
- Report Number(s):
- LBL-37505; CONF-950576-1; ON: DE96001101; TRN: 95:007461
- Resource Relation:
- Conference: 9. European symposium on gravity-dependent phenomena in physical sciences, Berlin (Germany), 2-5 May 1995; Other Information: PBD: May 1995
- Country of Publication:
- United States
- Language:
- English
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