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arXiv 2310.13601math.AP
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粘弹性流体模型的能量-变分解

Energy-variational solutions for viscoelastic fluid models

Abramo Agosti, Robert Lasarzik, Elisabetta Rocca

AI总结:

本文针对一大类非线性发展偏微分方程组引入了能量-变分解概念,通过改进的最小化运动格式证明了解的存在性,并利用相对能量不等式推导出弱-强唯一性,最后将该框架详细应用于两个粘弹性流体模型。

摘要:

在本文中,我们针对一大类非线性发展偏微分方程组引入了能量-变分解的概念。在一定的凸性假设下,可以通过一种改进的最小化运动格式构造性地证明此类解的存在性。弱-强唯一性由合适的相对能量不等式推导得出。我们的主要动机是将该一般框架应用于粘弹性流体模型。因此,我们简要概述了此类模型的不同版本及其推导过程。我们将抽象结果详细应用于两个粘弹性流体模型。在结论中,我们评论了一般理论的进一步应用及其可能的影响。

英文摘要:

In this article, we introduce the concept of energy-variational solutions for a large class of systems of nonlinear evolutionary partial differential equations. Under certain convexity assumptions, the existence of such solutions can be shown constructively by an adapted minimizing movement scheme. Weak-strong uniqueness follows by a suitable relative energy inequality. Our main motivation is to apply the general framework to viscoelastic fluid models. Therefore, we give a short overview on different versions of such models and their derivation. The abstract result is applied to two of these viscoelastic fluid models in full detail. In the conclusion, we comment on further applications of the general theory and its possible impact.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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