Application of Multiobjective Optimization in the Analysis of the Performance of Different Temperature Functions for a Generalized Cubic Equation of State

Q4 Physics and Astronomy

Defect and Diffusion Forum Pub Date : 2023-07-14 DOI:10.4028/p-J80lYr

Maicon de Paiva Torres, Géssica Ramos da Silva, T. Galo, Acir Moreno Soares Junior, Luiz Nélio Henderson Guedes de Oliveira

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引用次数: 0

Abstract

Since the emergence of van der Waals equation of state, several equations have been proposed to represent the behavior of pure compounds and mixtures, such as GEOS, which is a new generalized cubic equation of state form that employs a temperature function dependent on two or three adjustable parameters. Recently, multiobjective optimization has started to be applied in equations of state for parameters estimation, due to the conflicting nature of the objective functions. This methodology is attractive because it can be used to compare different models or variants of the same problem, through the trade-off analysis of the so-called Pareto front. In this context, the multiobjective PSO algorithm, based on the Pareto dominance principle, is used in this work for estimating the parameters of the generalized cubic equation of state, by fitting its results to synthetic experimental data of vapor pressure and saturated liquid volume. The performance of the new estimated parameters of the three temperature functions is investigated through the calculation of thermodynamic properties of interest in industry and academia. In addition, comparisons against real experimental data available in the literature are performed.

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多目标优化在广义三次状态方程不同温度函数性能分析中的应用

自从范德华状态方程出现以来，人们提出了一些方程来表示纯化合物和混合物的行为，例如GEOS，它是一种新的广义三次状态方程形式，采用依赖于两个或三个可调参数的温度函数。近年来，由于目标函数的冲突性，多目标优化开始应用于状态方程的参数估计。这种方法很有吸引力，因为通过所谓的帕累托前沿权衡分析，它可以用来比较同一问题的不同模型或变体。在此背景下，本文采用基于Pareto优势原理的多目标粒子群算法，通过拟合蒸汽压和饱和液体体积的综合实验数据，对广义三次状态方程的参数进行估计。通过计算工业界和学术界感兴趣的热力学性质，研究了这三个温度函数的新估计参数的性能。此外，与文献中可用的真实实验数据进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Defect and Diffusion Forum Physics and Astronomy-Radiation

CiteScore

1.20

自引率

0.00%

发文量

127

期刊介绍： Defect and Diffusion Forum (formerly Part A of ''''Diffusion and Defect Data'''') is designed for publication of up-to-date scientific research and applied aspects in the area of formation and dissemination of defects in solid materials, including the phenomena of diffusion. In addition to the traditional topic of mass diffusion, the journal is open to papers from the area of heat transfer in solids, liquids and gases, materials and substances. All papers are peer-reviewed and edited. Members of Editorial Boards and Associate Editors are invited to submit papers for publication in “Defect and Diffusion Forum” . Authors retain the right to publish an extended and significantly updated version in another periodical.