均匀加热的顺应性基底上的坠落液膜具有破碎的时间反向对称性

IF 3.4 2区 工程技术 Q1 ENGINEERING, MECHANICAL
Akshay S. Desai , Souradip Chattopadhyay , Amar K. Gaonkar
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引用次数: 0

摘要

本研究旨在分析均匀加热的顺应基底上的牛顿薄液态薄膜的动力学。我们考虑到液体违反了时间反转对称性,导致液体应力张量中出现了额外的非零项。利用长波展开技术,我们推导出一组控制薄膜厚度和基底变形的耦合方程,其中考虑了惯性、表面张力、热汽蚀和奇数粘度。通过线性稳定性分析和时空模拟,我们发现顺应性基底会增强不稳定性,而壁面加热会加剧不稳定性。然而,奇数粘度的引入有效地抑制了这些不稳定性,模拟与理论预测之间的一致性证实了这一点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Falling liquid films on a uniformly heated compliant substrate with broken time-reversal symmetry

This study aims to analyze the dynamics of a thin Newtonian liquid film on a uniformly heated compliant substrate. We consider the violation of time-reversal symmetry in the liquid, resulting in an additional non-zero term in the liquid stress tensor. Using the long-wave expansion technique, we derive a set of coupled equations governing the film thickness and substrate deformation, accounting for inertia, surface tension, thermocapillarity, and odd viscosity. Through linear stability analysis and spatiotemporal simulations, we observe that the compliant substrate enhances instability, while wall heating exacerbates it. However, the introduction of odd viscosity effectively suppresses these instabilities, as confirmed by the agreement between simulation and theoretical predictions.

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来源期刊
Journal of Fluids and Structures
Journal of Fluids and Structures 工程技术-工程:机械
CiteScore
6.90
自引率
8.30%
发文量
173
审稿时长
65 days
期刊介绍: The Journal of Fluids and Structures serves as a focal point and a forum for the exchange of ideas, for the many kinds of specialists and practitioners concerned with fluid–structure interactions and the dynamics of systems related thereto, in any field. One of its aims is to foster the cross–fertilization of ideas, methods and techniques in the various disciplines involved. The journal publishes papers that present original and significant contributions on all aspects of the mechanical interactions between fluids and solids, regardless of scale.
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