کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10378227 880751 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mobility of permeable fractal agglomerates in slip regime
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Mobility of permeable fractal agglomerates in slip regime
چکیده انگلیسی
Hydrodynamic drag and mobility of fractal aggregates in the slip creeping flow regime are calculated. A theoretical continuum model of the gas slip flow past and within agglomerates is developed. It accounts for effects of flow rarefaction and porous fractal structure upon the molecular mean free path, apparent viscosity, and effective permeability of agglomerates. It is shown that flow rarefaction significantly diminishes the aggregates' drag to an extent that cannot be predicted by the Cunningham's drag correction factor. The developed model allows calculation the agglomerates' transport properties in a wide range of fractal dimensions. For low Df agglomerates the drag force agrees with the Friedlander's expression based on the Epstein's single sphere drag in the free molecular regime.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 284, Issue 2, 15 April 2005, Pages 501-509
نویسندگان
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