牛顿流体垂直退出浸涂过程中全层厚度的时空演化

IF 4 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2025-07-21 DOI:10.1002/aic.70000

Heng‐Kuan Zhang, Ya‐Ran Yin, Cécile Lemaitre, Xian‐Ming Zhang, Guo‐Hua Hu

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引用次数: 0

摘要

本文讨论了牛顿流体在粘重状态下垂直抽吸的浸入涂层的层厚分布。过去的研究主要集中在层尖的厚度分布上。然而，以往的模型无法准确预测这部分，因为没有意识到厚度在远高于水平液面位置收敛于渐近厚度（恒定厚度）。目前的研究表明，该层在粘-重力状态下沿撤退方向变薄，并且在无量纲尺度上自相似。在充分考虑储层厚度分布特征的基础上，提出了一种预测全层厚度分布的模型。研究了该模型在不同雷诺数下的有效范围，结果表明，该模型在较大雷诺数范围内与实验和模拟结果吻合较好。

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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Spatial–temporal evolution of entire layer thickness during dip coating with vertical withdrawal of Newtonian fluids

The present article addresses the layer thickness profile of Newtonian fluids upon dip coating with vertical withdrawal in the visco‐gravity regime. The past studies have been focusing on the thickness profile of the layer tip. However, the previous models have been unable to accurately predict this part, due to not realizing that the thickness has converged to the asymptotic thickness (the constant thickness) at the location far above the horizontal liquid surface. The present work shows that the layer thins along the withdrawal direction in the visco‐gravity regime and is self‐similar at dimensionless scales. By fully considering the characteristics of the thickness profile, a model is proposed to predict the thickness profile of the entire layer. The validity range of the model is investigated at different values of Reynolds number, showing that this model agrees well with experimental and simulated results over a wide range of Reynolds numbers.

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.