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タイトル :Analytical consideration of liquid droplet impingement on solid surfaces
著者 :Yonemoto, Yukihiro
Kunugi, Tomoaki
刊行年月日 :2017-5
収録雑誌名 :Scientific Reports
巻 :7
開始ページ :2362
要約(Abstract) :In industrial applications involving spray-cooling, combustion, and so on, prediction of the maximum spreading diameter of a droplet impinging on a solid surface permits a quantitative estimation of heat removal and energy consumption. However, although there are many experimental studies regarding droplet impingement behaviour, theoretical models have an applicability limit for predicting the maximum spreading diameter. In the present study, we have developed an analytical model for droplet impingement based on energy conservation that considers adhesion energy in both horizontal and vertical directions at the contact line. The theory is validated by our experiment and existing experimental data possessing a wide range of Weber numbers. We demonstrate that our model can predict βm (i.e., the maximum spreading diameter normalised in terms of initial droplet diameter) for various Newtonian liquids ranging from micro- to millimetre-sized droplets on different solid surfaces and can determine the transition between capillary and viscous regimes. Furthermore, theoretical relations for scaling laws observed by many researchers are derived.
URL :https://www.nature.com/articles/s41598-017-02450-4
収録種別 :雑誌掲載論文
ISSN :20452322
出版社(者) :Springer Nature
権利(Rights) :© The Author(s) 2017
備考 :【著者所属】米本幸弘:熊本大学大学院先導機構 / 功刀資彰:京都大学
URI :http://hdl.handle.net/2298/37161
このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/2298/37161