Author :
Najafi, Bijan,Parsafar, Gholamabbas,Alavi, Saman
Title of Article :
Investigation of some regularities for dense fluids using a simple equation of state
Title Of Periodical :
JOURNAL OF PHYSICAL CHEMISTRY
VolumNumber :
V.99, No.22
Descriptors :
Regularities,Dense fluid,Equation of state
Abstract :
A simple equation of state for dense fluids is used to investigate some empirically known regularities and also to explore some new ones. The known regularities predicted by the EOS are (i) there is common bulk modulus point at which bulk modulus versus density of different isotherms of any fluid intersect at that single point and (ii) for each isochore with density greater than the Boyle density pressure versus temperature is linear. The new regularities explored by the ESO are (iii) there is a common compression point at which the compression factor against density of different isotherms of any dense fluid intersects at that single point and (iv) (Br-1)v2 varies linearly with Q2 for each isotherm of any dense fluid, where Br is the reduced bulk modulus and Q= 1/v is the molar density of the fluid. Experimental data were used to show the validity of the new regularitics. A physical interpretation for each regularity is given.
