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1 IRMA - Institut de Recherche Mathématique Avancée

Abstract : In this paper we investigate algorithms based on the Fast Legendre Transform FLT in order to compute tabulated equation of state for fluids with phase transition. The equation of state of a binary mixture is given by an energy minimization principle. According to the miscible or immiscible nature of the mixture, the energy of the system is either a convex envelope or an inf-convolution of the energies of the phases. Because these operations are closely linked to the Legendre transform, it is possible to construct $ON$ algorithms that compute efficiently these operations, where $N$ is the number of points in the table. In addition, it appears that the natural mathematical tool for studying mixture thermodynamics in the Legendre space is the max-plus algebra theory.

Keywords : phase transition fenchel transform tabulated pressure laws thermodynamics





Autor: Philippe Helluy - Hélène Mathis -

Fuente: https://hal.archives-ouvertes.fr/



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