کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661274 1458157 2007 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A numerical study on the fluid flow and heat transfer around a circular cylinder near a moving wall
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
A numerical study on the fluid flow and heat transfer around a circular cylinder near a moving wall
چکیده انگلیسی

The present study numerically investigates two-dimensional laminar fluid flow and heat transfer past a circular cylinder near a moving wall. For the purpose of a careful analysis of the modification of flow and thermal fields around a cylinder by a moving wall, numerical simulations to calculate the fluid flow and heat transfer past a circular cylinder are performed for different Reynolds numbers of 100, 140 and 180 and a fixed Prandtl numbers of 0.7 (air) in the range of 0.1⩽G/D⩽40.1⩽G/D⩽4, where G/D is the ratio of the gap between the cylinder and a moving wall, G and the cylinder diameter, D. The present study reports the detailed information of flow and thermal quantities on the cylinder surface at different gap ratios. As the gap ratio decreases, the vortex shedding formed in the wake is suppressed and the oscillating amplitude of lift coefficient decreases. Thus the drag, lift coefficients and Nusselt number representing the fluid flow and heat transfer characteristics also vary as a function of the gap ratio with the dependence of Reynolds number.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 50, Issues 17–18, August 2007, Pages 3507–3520
نویسندگان
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