کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
595280 1454007 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical simulation of the unsteady hydrodynamics of a water droplet in paraffin oil
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Numerical simulation of the unsteady hydrodynamics of a water droplet in paraffin oil
چکیده انگلیسی

This work reports on numerical simulations of the unsteady hydrodynamics occurring in droplets of pure water in a continuous paraffin oil phase. The considered droplets have varying initial position and are confined in a 1 cm × 1 cm square box. The systems are two-dimensional, submitted to gravity and surface tension effects are fully accounted for. Such systems are typical examples of two phases, unsteady, free interface problems. The full Navier–Stokes equation for incompressible fluids is solved and a volume of fluids technique without interface reconstruction is used. The time evolution of the droplets as well as their hydrodynamics is investigated. Influence of the initial condition and the bifurcations occurring in the velocity field inside the droplets are discussed. Besides droplets unsteady evolution, this work also aims to propose numerical techniques for the simulation of the hydrodynamics of complex fluids systems like emulsions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 365, Issues 1–3, 5 August 2010, Pages 70–78
نویسندگان
, , ,