کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4992250 | 1457256 | 2018 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of a single droplet impact onto a liquid film with given horizontal velocity
ترجمه فارسی عنوان
بررسی یک قطره قطره بر روی یک فیلم مایع با سرعت افقی داده شده
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The dynamics of a single droplet impact onto a liquid film is numerically studied in this work. A two-dimensional droplet is initially placed above a liquid film and falls freely under gravity together with a given horizontal velocity. To conduct numerical simulations, a hybrid method is adopted, in which the flow field is solved by using the lattice Boltzmann method and the interface is captured by solving the Cahn-Hilliard equation directly. At a fixed value of density ratio of droplet to ambient fluid (Ïâ), the effects of Bond number (Bo), Weber number (We) and dimensionless liquid film thickness (Hâ) are systematically investigated. Based on the results achieved, it is found that the behavior of resultant splash structure after droplet impact is greatly affected by Bo, We and Hâ. By increasing Bo and We, a higher right jet can be generated, but it has an opposite influence on the left jet. Moreover, there exists a critical value of Hâ. When the thickness is lower than the critical value, the right jet height would increase with Hâ, otherwise, it would decrease with Hâ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Mechanics - B/Fluids - Volume 67, JanuaryâFebruary 2018, Pages 269-279
Journal: European Journal of Mechanics - B/Fluids - Volume 67, JanuaryâFebruary 2018, Pages 269-279
نویسندگان
Chen Liu, Meng Shen, Jie Wu,