On the Evaluation of Dieterici Model Via The Study of Bulk Modulus and Tait-Marnagan Regularity of Associating Fluids

Equations of State (EOS) are major tools for correlation and prediction of thermodynamic properties offluids, therefore a large number of publications deal with their development or improvement.In 1899, Dietericiproposed an alternative theoretically based EOS involving an exponential term att ZZ  Z repe . There are some advantagesin this model, such as a more realistic critical compressibility factor (Z).In this paper, we calculate bulk modulus andstudy Tait-Marnaganregularity of associating fluids in order to evaluate the performance of equations of state (EOS)based on Dieterici model. The investigated EOSs are Dieterici (D), Dieterici-Carnahan-Starling (DCS) and Dieterici-Guggenheim (DG). Our studies show that the bulk modulus and the regularityare predicted well by EOSs for allsubstances.

Keywords:

Bulk Modulus , Tait-Marnagan Regularity and Associating Fluids , Dieterici Model