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首页> 外文期刊>Applied Mathematical Modelling >Coupled wetting meniscus model for the mechanism of spontaneous capillary action
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Coupled wetting meniscus model for the mechanism of spontaneous capillary action

机译：耦合润湿弯月面模型用于自发毛细作用的机理

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摘要

Capillarity plays a significant role in many natural and artificial processes, but the mechanism responsible for its dynamics is not completely understood. In this study, we consider capillary flow characteristics and propose a coupled wetting meniscus model for the mechanism of spontaneous capillary action. In this model, capillary action is considered as the dynamic coupling of two interfacial forces, i.e., the wall wetting force at the contact line and the meniscus restoring force on the free interface. The wetting force promotes the motion of the contact line directed toward an equilibrium contact angle, whereas the meniscus restoring force promotes a reduction in the interface curvature, which is more consistent with a 90° contact angle. The competing interaction between these two forces is coupled together via the evolution of the interface shape. The model is then incorporated into a finite volume method for a two-fluid flow with an interface. Capillary flow experiments were performed, including vertical and horizontal flows. Phenomena analysis and data comparisons were conducted to verify the proposed model. According to the results of our study, the model can explain the capillary flow process well and it can be also used to accurately guide capillary flow calculations.
机译：毛细作用在许多自然和人工过程中都起着重要作用，但是导致其动力学的机理尚未完全被理解。在这项研究中，我们考虑了毛细血管的流动特性，并为自发毛细作用机制提出了一个耦合的润湿弯液面模型。在该模型中，毛细作用被认为是两个界面力的动态耦合，即接触线上的壁润湿力和自由界面上的弯液面恢复力。润湿力促进接触线朝向平衡接触角运动，而弯液面恢复力促进界面曲率减小，这与90°接触角更加一致。这两个力之间的竞争相互作用通过界面形状的演变耦合在一起。然后将该模型并入到具有接口的双流体流动的有限体积方法中。进行了毛细管流实验，包括垂直流和水平流。进行了现象分析和数据比较，以验证所提出的模型。根据我们的研究结果，该模型可以很好地解释毛细管流动过程，也可以用于精确指导毛细管流动计算。

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  • 来源
    《Applied Mathematical Modelling》 |2017年第10期|200-218|共19页
  • 作者

    Wang Hui; Liang Junjie; Peng Yiyan; Zhou Huamin; Huang Zhigao; Zhang Yun; Hua Lin;

  • 作者单位

    State Key Laboratory of Materials Processing and Die & Mold Technology, Huazhong University of Science and Technology, Wuhan, China,Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan University of Technology, Wuhan, China;

    State Key Laboratory of Materials Processing and Die & Mold Technology, Huazhong University of Science and Technology, Wuhan, China;

    Department of Medical Physics, Wisconsin Institutes for Medical Research, University of Wisconsin, Madison, WI, United States;

    State Key Laboratory of Materials Processing and Die & Mold Technology, Huazhong University of Science and Technology, Wuhan, China;

    State Key Laboratory of Materials Processing and Die & Mold Technology, Huazhong University of Science and Technology, Wuhan, China;

    State Key Laboratory of Materials Processing and Die & Mold Technology, Huazhong University of Science and Technology, Wuhan, China;

    Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan University of Technology, Wuhan, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Capillary action; Coupled wetting meniscus; Mechanism; Restoring force; Spontaneous; Wetting force;

    机译：毛细管作用;耦合的半月板润湿;机制;恢复力;自发;润湿力;

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