کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10378267 | 880751 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Drag force on a rigid spheroidal particle in a cylinder filled with Carreau fluid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Drag force on a rigid spheroidal particle in a cylinder filled with Carreau fluid Drag force on a rigid spheroidal particle in a cylinder filled with Carreau fluid](/preview/png/10378267.png)
چکیده انگلیسی
The boundary effect on the drag acting on a rigid particle is investigated by considering a spheroid on the axis of a cylinder filled with a Carreau fluid. The result of numerical simulation reveals that the ratio (drag coefficient in Carreau fluid/drag coefficient in Newtonian fluid) has a maximum as the ratio (semiaxis in radial direction/radius of cylinder) varies. The presence of a wall has the effect of enhancing the convective motion in the rear part of a particle, and therefore, the formation of wakes. The influence of the shape of a particle on the drag force acting on it can be decreased either by increasing the shear-thinning effect of the fluid or by increasing the Reynolds number. The Reynolds number at which flow separation occurs is found to increase roughly linearly with the increase in the power-law exponent of the Carreau fluid.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 284, Issue 2, 15 April 2005, Pages 729-741
Journal: Journal of Colloid and Interface Science - Volume 284, Issue 2, 15 April 2005, Pages 729-741
نویسندگان
Jyh-Ping Hsu, Yu-Heng Hsieh, Shiojenn Tseng,