Modifying GMA equation of state for accurate calculation of natural gas and LNG thermophysical properties at low and high pressure

The main concern of this paper is on the improvement of the GMA equation of state, which has been used for density calculation of liquids with excellent accuracy. However,GMA equation of state cannot predict the density of components in gas region and therefore cannot be used for calculation ofnatural gas thermophysical properties. GMA equation of state is based on intermolecular potential energy, therefore, the potentialenergy of the GMA equation of state iscorrected and an modified equation of state is obtained which can calculated thermophysical properties in gas as well as liquid region. Thefinal form of the new equation of state, like GMA, is a regularity between (