کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
650668 1457301 2011 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Migration of a solid particle in the vicinity of a plane fluid-fluid interface
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Migration of a solid particle in the vicinity of a plane fluid-fluid interface
چکیده انگلیسی
The slow migration of a small and solid particle in the vicinity of a gas-liquid, fluid-fluid or solid-fluid plane boundary when subject to a gravity or an external flow field is addressed. By contrast with previous works, the advocated approach holds for arbitrarily shaped particles and arbitrary external Stokes flow fields complying with the conditions on the boundary. It appeals to a few theoretically established and numerically solved boundary-integral equations on the particle's surface. This integral formulation of the problem allows us to provide asymptotic approximations for a distant boundary and also, implementing a boundary element technique, accurate numerical results for arbitrary locations of the boundary. The results obtained for spheroids, both settling or immersed in external pure shear and straining flows, reveal that the rigid-body motion experienced by a particle deeply depends upon its shape and also upon the boundary location and properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Mechanics - B/Fluids - Volume 30, Issue 1, January–February 2011, Pages 76-88
نویسندگان
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