water_correlation(phase, T='pore.temperature', salinity='pore.salinity')[source]#

Calculates vapor pressure of pure water or seawater given by [1] based on Raoult’s law. The pure water vapor pressure is given by [2]

  • phase (OpenPNM Phase object) – The phase object to which this model is associated (i.e. attached). This controls the length of the calculated array(s), and also provides access to other necessary properties.

  • T (str (dict key) or numeric) – Name of the dictionary key on phase containing the ndarray of temperature values, in units of [K]. If a numerical value is passed (i.e. a scalar or ndarray) it gets used directly.

  • salinity (str) – The dictionary key containing the salinity values in g/kg


T must be in K, and S in g of salt per kg of phase, or ppt (parts per


VALIDITY: 273 < T < 473 K; 0 < S < 240 g/kg; ACCURACY: 0.5 percent


[1] Sharqawy M. H., Lienhard J. H., and Zubair, S. M., Desalination and Water Treatment, 2010. [2] ASHRAE handbook: Fundamentals, ASHRAE; 2005.