کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
622498 882651 2006 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Steady Flow of Power-law Fluids Across a Square Cylinder
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Steady Flow of Power-law Fluids Across a Square Cylinder
چکیده انگلیسی

The two-dimensional flow of power-law fluids over an isolated unconfined square cylinder has been investigated numerically in the range of conditions 1 ≤ Re ≤ 45 and 0.5 ≤ n ≤ 2.0. The global quantities such as wake length, drag coefficients and the detailed kinematic variables like stream function, vorticity and so on, have been calculated for the above range of conditions. In particular, the effects of Reynolds number and of the power-law index have been investigated in the steady flow regime. The shear-thinning fluid behaviour increases the drag above its Newtonian value whereas the shear-thickening behaviour reduces the drag below its Newtonian value. However, as the value of the Reynolds number is gradually increased, the role of power-law index diminishes. Similarly, the wake size is shorter in shear-thinning fluids than that in Newtonian fluids under otherwise indentical conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Research and Design - Volume 84, Issue 4, April 2006, Pages 300-310