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Rheology and microstructure of magmatic emulsions - Theory and experimentsThe rheological properties of a dilute mixture of melt plus vapor bubbles, referred to as emulsion, are investigated theoretically and in rheometric experiments on dilute viscous germanium dioxide emulsions at temperatures between 1100 and 1175 C and at 100 kPa pressure in a rotating rod rheometer at shear rates between 0.05/s and 7/s. The results indicate that the emulsions may be described by a power-law constitutive relation when observations cover a sufficient range of shear rates to resolve nonlinear flow.
Document ID
19930066530
Document Type
Reprint (Version printed in journal)
Authors
Stein, Daniel J. (NASA Headquarters Washington, DC United States)
Spera, Frank J. (California Univ. Santa Barbara, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Journal of Volcanology and Geothermal Research
ISSN: 0377-0273
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSF EAR-88-16103
CONTRACT_GRANT: DE-FG03-89ER-14050
CONTRACT_GRANT: NAGW-1452
Distribution Limits
Public
Copyright
Other