DataVXLangmuirPaper
journal article·2020-04-28Open access

Enhancement of Meniscus Pump by Multiple Particles

Hayate Nakamura, Victor Delafosse, Georg F. Dietze, Harunori N. Yoshikawa, Farzam Zoueshtiagh, Lizhong Mu, Takahiro Tsukahara, Ichiro Ueno

Langmuir· Volume 36· Issue 16
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Source abstract

Abstract

We numerically investigate the behavior of a droplet spreading on a smooth substrate with multiple obstacles. As experimental works have indicated, the macroscopic contact line or the three-phase boundary line of a droplet exhibits significant deformation resulting in a local acceleration by successive interactions with an array of tiny obstacles settled on the substrate (Mu et al., Langmuir 2019, 35). We focus on the menisci formation and the resultant pressure and velocity fields inside a liquid film in a two-spherical-particle system to realize an optimal design for the effective liquid-transport phenomenon. Special attention is paid to the meniscus formation around the second particle, which influences the liquid supply related to the pressure difference around the first particle as a function of the distance between the two particles. We find that the meniscus around the first particle plays an additional role as the reservoir of the liquid supplied toward the second particle, which is found to enhance the total pumping effect.
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Research context

OpenAlex topics: Surface Modification and Superhydrophobicity · Fluid Dynamics and Heat Transfer · Nanomaterials and Printing Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Division of Mechanical Engineering, School of Science and Technology, Tokyo University of Science, 162-8601 Tokyo, Japan

Université Lille, F-59000 Lille, France

Université Paris-Saclay, CNRS, FAST, 91405 Orsay, France

Université Côte d’Azur, CNRS, Institut de Physique de Nice, 06108 Nice, France

Université Lille, CNRS, UMR 8520—IEMN, F-59000 Lille, France

Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, 116024 Dalian, China

Department of Mechanical Engineering, Faculty of Science and Technology, Tokyo University of Science, 162-8601 Tokyo, Japan

Research Institute for Science and Technology (RIST), Tokyo University of Science, 278-8510 Chiba, Japan

Funding

Agence Nationale de la Recherche · Japan Society for the Promotion of Science · Suzuki Foundation

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