41. :: See equation of state # Other equations of state of interest ( stiffened equation of state ). 42. These equations are known as " equations of state " since they specify parameters of the thermodynamic state. 43. Much more complicated equations of state have been empirically derived, but they all have the above implicit form. 44. Any equation expliciting one of these transport coefficient in the conservative variables is called an equation of state . 45. On the other hand the ideal gas law is less strict than the original fundamental equation of state considered. 46. In addition to this equation, an equation of state and an equation for the conservation of energy is needed. 47. However, this equation is general for an inviscid nonconductive fluid and no equation of state is implicit in it. 48. Such behaviour is qualitatively ( though perhaps not quantitatively ) predicted by the van der Waals equation of state . 49. It follows directly from the thermodynamic equation of state if we use the ideal gas law pV = nRT. 50. Simple equation of states ( EOS ) such as Peng Robinson should be avoided since their accuracy is low.
