کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
657927 1458075 2013 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three-dimensional numerical study of turbulent flow and heat transfer in a wavy-walled duct
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Three-dimensional numerical study of turbulent flow and heat transfer in a wavy-walled duct
چکیده انگلیسی
The present study focuses on the computation of fully developed flow and heat transfer through a stationary wavy-walled duct using large eddy simulation (LES) in finite volume framework. Shear improved Smagorinsky model (SISM) has been used for the computation of eddy viscosity. The wavy-wall is described by the sine function y = 2a sin2(πx/L). The geometrical ratios Hmin/Hmax and L/a are fixed to 0.2 and 8, respectively. The effect of Reynolds numbers (2053-10,000) on the flow field and heat transfer has been presented. Instantaneous, mean and turbulent quantities are reported. It has been observed that the flow is strongly three-dimensional. The friction factor is found to be insensitive to the Reynolds number. Normalized Nusselt number ratio shows significant Reynolds number dependency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 67, December 2013, Pages 98-117
نویسندگان
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