DOE OSTI · 3030441
Molten Halide Salt Surface Tension: Methods and Correlations
Abstract
Here, this paper reviews various methods for studying surface tension and their applicability to fluoride and chloride molten salt systems, including a comparison of benefits and drawbacks. Such a comparison aids in experiment design based on desired factors such as scale, accuracy, and repeatability. A detailed review is presented for existing literature data regarding the surface tension of molten fluoride and chloride salts. These reference data were compiled and analyzed to determine cross-validated correlation equations for several alkali and alkaline earth fluoride and chloride salts as functions of temperature. These correlations are necessary for reliable multiphysics modeling approaches as well as accurate design and analysis of multiphase molten salt phenomena such as gas sparging and bubble formation/transport. This analysis supports the development of the thermophysical arm of the Molten Salt Thermal Properties Database (MSTDB-TP) managed by Oak Ridge National Laboratory.
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Chesser, Ryan [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000282724875), Termini, Nicholas [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Birri, Anthony [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000342956791). 2026-04-13. Molten Halide Salt Surface Tension: Methods and Correlations. https://doi.org/10.1007/s10765-026-03748-0
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