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Preliminary drop-tower experiments on liquid-interface geometry in partially filled containers at zero gravityPlexiglass containers with rounded trapezoidal cross sections were designed and built to test the validity of Concus and Finn's existence theorem (1974, 1983) for a bounded free liquid surface at zero gravity. Experiments were carried out at the NASA Lewis two-second drop tower. Dyed ethanol-water solutions and three immiscible liquid pairs, with one liquid dyed, were tested. High-speed movies were used to record the liquid motion. Liquid rose to the top of the smaller end of the containers when the contact angle was small enough, in agreement with the theory. Liquid interface motion demonstrated a strong dependence on physical properties, including surface roughness and contamination.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Smedley, G.
(California Institute of Technology Pasadena, United States)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: Experiments in Fluids
Volume: 8
Issue: 6, Ma
ISSN: 0723-4864
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
Distribution Limits

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