کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
657562 1458069 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lattice Boltzmann simulations for self-propelled jumping of droplets after coalescence on a superhydrophobic surface
ترجمه فارسی عنوان
شبیه سازی شبکهای بولتزمن برای پریدن قطرات خود پس از تکامل بر روی سطح سوپر هیدروفوفوبی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی

The phenomenon of coalescence induced droplets self-propelled jumping on superhydrophobic surfaces (SHS) is numerically simulated in this paper using 2D lattice Boltzmann method (LBM). To overcome numerical instability problems of a two-phase flows with a high liquid/vapor density ratio and a high liquid/vapor viscosity ratio, the equation of state is modified according to an existing method and the multiphase relaxation time (MRT) method is adopted. The simulated jumping velocity and jumping height of droplets with different radii are found in good agreement with experimental observations. In addition, the reason why coalescence droplets will jump on superhydrophobic surface with a sufficiently high contact angle is explained based on a qualitative analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 73, June 2014, Pages 195–200
نویسندگان
, , ,