Molecular dynamics of drop spreading on a solid surface

Yang, Jielong; Koplik, Joel; Banavar, Jayanth R.

doi:10.1103/physrevlett.67.3539

Cited by 107 publications

(74 citation statements)

References 9 publications

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“…Electronic mail: kobakazu@eng.hokudai.ac.jp Taking advantage of the ease of treating the liquid-wall interaction, several studies of nanodroplet impact were conducted using molecular dynamics (MD) simulation. [6][7][8][9][10][11][12][13][14] Recently, Koplik and Zhang 12 investigated the behaviors of nanodroplets consisting of short chains of Lennard-Jones liquids after impact with the solid surface, and Zhang et al 13 studied the influence of wettability and roughness of solid surfaces for nanodroplet impact. From these studies, detailed spreading dynamics due to the nanodroplet impact have been clarified.…”

Section: Introductionmentioning

confidence: 99%

Early stage of nanodroplet impact on solid wall

et al. 2016

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In this study, we investigated nanodroplet spreading at the early stage after the impact using molecular dynamics simulations by changing the magnitude of the intermolecular force between the liquid and wall molecules. We showed that the droplet deformation after the impact greatly depends on the intermolecular force. The temporal evolution of the spreading diameters was measured by the cylindrical control volume for several molecular layers in the vicinity of the wall. At the early stage of the nanodroplet impact, the normalized spreading radius of the droplet is proportional to the square root of the normalized time,t. This result is understood by the geometrical consideration presented by Rioboo et al.["Time evolution of liquid drop impact onto solid, dry surfaces," Exp. Fluids 33, 112-124 (2002)]. In addition, we found that as the intermolecular force between the liquid and wall becomes stronger, the normalized spreading diameter of the first molecular layer on the wall remains less dependent on the impact velocity. Furthermore, the time evolution of the droplet spreading changes from √t to logt with time. C 2016 AIP Publishing LLC.

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Section: Introductionmentioning

confidence: 99%

Early stage of nanodroplet impact on solid wall

et al. 2016

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“…al., (2) Gu et al (3) 은 정지된 상태에서 고체 표면(solid surface) 위의 액적이 퍼지는 현상에 대한 수치 적 연구를 수행하였다. Bayer et al, (4) Cossali et al,…”

Section: 서 론unclassified

Study on a Shape Deformation of Water Meniscus for the Rectangular and Circular Tips Moving Horizontally

Kim¹,

Son²,

Ha³

et al. 2011

Korean Journal of Air-Conditioning and Refrigeration Engineerin

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A two-dimensional immiscible water meniscus deformation phenomena on a moving tip in a channel has been investigated by using lattice Boltzmann method involving two-phase model. We studied the behavior of a water meniscus between the tip and a solid surface. The contact angles of the tip and a solid surface considered are in the range from 10° to 170°. The velocity of the tip used in the study are 0.01, 0.001, and 0.0001. The shapes of tip considered are rectangular and circular. The behavior of water confined between the tip and a solid surface depends on the contact angles of the tip and a solid surface, and the tip velocity. When the tip is moving, we can observe the various behaviors of shear deformation of a water meniscus. As time goes on, the behavior of a water meniscus can be classified into three different patterns which are separated from the tip or adhered to the tip or sticked to a solid surface according to the contact angles and the tip velocity.

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“…This can be done with molecular dynamics in which particles are assumed to interact through the Lennard-Jones pairpotential and to move about with continuum (Newtonian or non-Newtonian) dynamics. In a study by Yang et al [9], the fluid and the solid substrate were both composed of par ticles of similar size, but with the substrate particles having a much larger Interaction strength. This entailed a strongly varying potential between the fluid and substrate particles, and a highly volatile fluid making the substrate moistened by fluid particles.…”

Section: Molecular Dynamicsmentioning

confidence: 99%