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A microscopic model for the phase diagramm of a pur substance

Abstract : Recently, a two-dimensional model that leads to …rst order phase transitions has been proposed. This model also leads to phase diagrams which present the characteristics observed in phase diagrams of the substances : three thermodynamic phases, three coexistence curves, a triple point and a critical point. In the present study, the calculation of the latent heats of the di¤erent …rst order phase transitions as well as the experimental data concerning the phase diagram of a pure substance, here carbon dioxyde, are introduced into the two-dimensional model. By assuming that the pressure does not modify the chemical bond between two nearest-neighbors atoms but modi…es that betwen two next nearest-neighbors atoms we can calculated the phase diagram of the compound in (bar; Kelvin) plane and the Joule values of the di¤erent latent heats of transition. Moreover, the energy value of the chemical bond between two nearest-atoms is obtained.
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Preprints, Working Papers, ...
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https://hal.uvsq.fr/hal-03373139
Contributor : Jamil A. Nasser Connect in order to contact the contributor
Submitted on : Monday, October 11, 2021 - 1:01:04 PM
Last modification on : Wednesday, October 20, 2021 - 12:24:14 AM

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  • HAL Id : hal-03373139, version 1

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Jamil Nasser. A microscopic model for the phase diagramm of a pur substance. 2021. ⟨hal-03373139⟩

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