Early stage of nanodroplet impact on solid wall

Kobayashi, Kazumichi; Konno, Kazuki; Yaguchi, Hisao; Fujii, Hiroyuki; Sanada, Toshiyuki; Watanabe, Masao

Early stage of nanodroplet impact on solid wall

Kobayashi, Kazumichi; Konno, Kazuki; Yaguchi, Hisao et al.

Physics of Fluids, 2016, 28(3), 032002

Permalink : https://hdl.handle.net/2115/60786

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アクセス権	open access
URI	https://hdl.handle.net/2115/60786
タイトル	Early stage of nanodroplet impact on solid wall
著者	Kobayashi, Kazumichi ; Konno, Kazuki ; Yaguchi, Hisao ; Fujii, Hiroyuki ; Sanada, Toshiyuki ; Watanabe, Masao
e-Rad_Researcher 80453140 著者名 Kobayashi, Kazumichi
著者名 Konno, Kazuki
著者名 Yaguchi, Hisao
e-Rad_Researcher 00632580 著者名 Fujii, Hiroyuki
著者名 Sanada, Toshiyuki
e-Rad_Researcher 30274484 著者名 Watanabe, Masao
言語	英語
キーワード	Fluid drops
	Intermolecular forces
	Nanodroplets
	Molecular dynamics
	Kinematics
発行日	2016-03
出版者	American Institute of Physics (AIP)
収録物名	Physics of Fluids
巻(号)	28(3)
ページ	032002
抄録	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, tˆ. This result is understood by the geometrical consideration presented by Rioboo et al. [“Time evolution of liquiddrop 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 tˆ√ to logtˆ with time.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright 2016 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Physics of Fluids　28 032002 (2016) and may be found at http://scitation.aip.org/content/aip/journal/pof2/28/3/10.1063/1.4942874.
PISSN	1070-6631
EISSN	1089-7666
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1063/1.4942874