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Gravity effects in fluids near the gas liquid critical point
Published
Author(s)
Michael R. Moldover, Jan V. Sengers, R W. Gammon, R Hocken
Abstract
The presence of a gravitational field leads to both practical and fundamental limits of the resolution in critical phenomena experiments in fluids near the gas-liquid critical point. We present equations that yield estimates of the gravitational limitations in a variety of critical phenomena experiments for a large number of fluids and as a function of the magnitude of the gravitational field. Various strategies for improving the resolution of such experiments are discussed, including procedures that remove a fluid from thermodynamic equilibrium (e.g., stirring). A comparison is made between the gravitational limitations in earth-bound experiments and those at the microgravitational levels that may become accessible in an orbiting laboratory.
Moldover, M.
, Sengers, J.
, Gammon, R.
and Hocken, R.
(1979),
Gravity effects in fluids near the gas liquid critical point, Reviews of Modern Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=925171
(Accessed October 11, 2025)