Effect of pairwise additivity on finite-temperature behavior of classical ideal gas

Ashkan Shekaari and Mahmoud Jafari

Physica A: Statistical Mechanics and its Applications, 2018, vol. 497, issue C, 101-108

Abstract: Finite-temperature molecular dynamics simulations have been applied to inquire into the effect of pairwise additivity on the behavior of classical ideal gas within the temperature range of T= 250–4000 K via applying a variety of pair potentials and then examining the temperature dependence of a number of thermodynamical properties. Examining the compressibility factor reveals the most deviation from ideal-gas behavior for the Lennard-Jones system mainly due to the presence of both the attractive and repulsive terms. The systems with either attractive or repulsive intermolecular potentials are found to present no resemblance to real gases, but the most similarity to the ideal one as temperature rises.

Keywords: Ideal gas; Molecular dynamics; Thermodynamical properties (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:497:y:2018:i:c:p:101-108

DOI: 10.1016/j.physa.2018.01.016

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