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
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
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(Ïx/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
Journal: International Journal of Heat and Mass Transfer - Volume 67, December 2013, Pages 98-117
نویسندگان
Abhishek G. Ramgadia, Arun K. Saha,