کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
667288 1458520 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of the dynamic wetting behavior in a capillary tube considering the macroscopic–microscopic contact angle relation and generalized Navier boundary condition
ترجمه فارسی عنوان
مدلسازی رفتار خیساندن پویایی در یک لوله مویرگ با توجه به رابطه زاویه تماس میکروسکوپی ماکروسکوپیک و شرایط مرزی ناویر
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• A numerical wetting model was proposed using the GNBC and the Cox’s relation.
• The experimentally measured angle-velocity correlation is well reproduced.
• The wetting dynamics is described by combining micro-model and macro–micro-relations.

In this study, dynamic wetting phenomena in a capillary tube were studied by using numerical simulations based on the front-tracking method employing the generalized Navier boundary condition (GNBC) and by experimental measurements. For the GNBC, based on molecular dynamics simulations, the microscopic dynamic contact angle is estimated from the grid-scale contact angle using Cox’s macroscopic–microscopic relation. The experimentally measured correlation between the apparent dynamic contact angle and the moving velocity of the contact line is well reproduced by the present simulation technique considering Cox’s macroscopic–microscopic relation. Thus, we found that the dynamics of wetting are well described by combining molecular-scale behavior and macroscopic–microscopic relations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Multiphase Flow - Volume 59, February 2014, Pages 106–112
نویسندگان
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