Connection between zero-pressure mixing rules and infinite-pressure mixing rules

Infinite-pressure mixing rules and zero-pressure mixing rules are related by a very simple equation. The zero-pressure models and the infinite-pressure models are interchangeable through this connection. This paper will show how to convert the Huron–Vidal infinite-pressure mixing rule to a zero-pressure mixing rule, or vice versa. The MHV1 zero-pressure mixing rule will be reformulated to satisfy second virial coefficient constraint. The Twu–Coon and Wong–Sandler infinite-pressure mixing rules will be modified to improve their accuracy for reproducing the incorporated G^E model. A simplification of the Twu–Coon–Bluck [TCB(r)] zero-pressure mixing rule will be presented. The MHV1 mixing rule will be shown to be a special case of TCB(r).