Contents
SW_SurfaceTension Surface tension of seawater
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USAGE: sigma = SW_SurfaceTension(T,S)
DESCRIPTION:
Surface tension of seawater at atmospheric pressure (0.1 MPa) using Eq. (28)
given by [1] which best fit the data of [2] and [3]. The pure water
surface tension is given by [4]. Values at temperature higher than
the normal boiling temperature are calculated at the saturation pressure.
INPUT: (all must have same dimensions)
T = temperature [degree C] (ITS-90)
S = salinity [g/kg] (reference-composition salinity)
OUTPUT:
sigma = surface tension [N/m]
VALIDITY: 0 < T < 40 C, 0 < S < 40 g/kg
ACCURACY: 0.18
REFERENCES:
[1] Sharqawy M. H., Lienhard J. H., and Zubair, S. M., Desalination and Water Treatment, 2009.
[2] O. Krummel, Wiss. Meeresunters. der Kieler Komm., Bd. 5, Heft 2, 1900.
[3] C. Guohua, S. Jingzeng, G. Ling, and Z. Lijun, Study on the surface tension of seawater,
Oceanologia et Limnologia Sinica, 25(3), 306-311, 1994.
[4] IAPWS, Release on the Surface Tension of Ordinary Water Substance, 1994.
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