A GENERIC formalism for Korteweg-type fluids: I. A comparison with classical theory

A GENERIC formalism for Korteweg-type fluids: I. A comparison with classical theory
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Korteweg 型流体的通用形式:I. 与经典理论的比较

DOI:
10.1088/1873-7005/ab6f47
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发表时间:
2020
影响因子:
1.5
通讯作者:
Suzuki Yukihito
Suzuki Yukihito
中科院分区:
工程技术4区
文献类型:
--
作者:
Kazuo Takemura;Yoshinori Kametaka and Atsushi Nagai;亀高惟倫,渡辺宏太郎,永井 敦,武村一雄,山岸弘幸;Yukihito Suzuki;Suzuki Yukihito

文献摘要

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我们研究了 Korteweg 型流体的数学模型,该模型以 Grmela 和 Öttinger 提出的非平衡可逆-不可逆耦合一般方程 (GENERIC) 的形式表述,并与 Dunn 和 Serrin 的经典工作进行了比较。 Dunn 和 Serrin 引入的间隙功再次出现在公式中,并且如果我们声称 Korteweg 应力所做的功是“等熵”,那么间隙功被证明是必要的。事实上,GENERIC 形式主义为 Korteweg 型流体的间隙工作提供了控制方程的相当简单的推导。在随附的论文中,在这种形式中,我们导出了一个包含密度二阶梯度的高阶模型。我们还讨论了间隙作用与古尔廷引入的微力的关系。
We investigated a mathematical model for Korteweg-type fluids, formulated in the form of the General equation for the non-equilibrium reversible–irreversible coupling (GENERIC) as proposed by Grmela and Öttinger, in comparison with the classical work of Dunn and Serrin. Interstitial working introduced by Dunn and Serrin reappeared in the formulation and proved to be necessary if we claim that the work done by the Korteweg stress is' isentropic'. Indeed, the GENERIC formalism provides a fairly simple derivation of the governing equations with the interstitial working for Korteweg-type fluids. In the accompanying paper, and within this formalism, we derived a higher-order model including the second-order gradient of the density. We also discussed the relation of the interstitial working to the microforces introduced by Gurtin.