توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱FLOW AND HEAT TRANSFER CHARACTERISTICES IN A 3D CHANNEL WITH RIB TURBULATORS
نویسنده(ها):
اطلاعات انتشار: سیزدهمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۸
Three–dimensional numerical predictions of the flow and heat transfer are presented for a channel with two angled ribs. The 20 deg ribs in respect to the main flow are attached on the bottom of channel wall as vortex generators to enhance heat transfer. The Prandtl number is 0.71 and the Reynolds number based on the inflow velocity and height of channel is 200. In the present study, the 3D–unsteady DNS simulation was performed using very fine resolution with more than one million grid points. Time–dependent simulations show that the flow and heat transfer characteristics become steady for the Reynolds number of this work. The structures of heat transfer and flow are studied by using velocity and vorticity components, temperature and Nusselt number. This study shows that the heat transfer is enhanced due to the generation of the Longitudinal and the horseshoe vortices.<\div>

۲Numerical investigation of power–law fluid flow characteristics and heat transfer over tandem square cylinders
نویسنده(ها): ،
اطلاعات انتشار: بیستمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۴
This paper presents the results of a numerical study on the power–law fluid flow characteristics and heat transfer over two equal square cylinders in a tandem arrangement. Spacing between the tandem cylinders is forth widths of the cylinder side and power–law index range from 0.7 to 1.6 at Re=160 and Pr=0.7. Unsteady incompressible laminar flows in the 2–D regime are performed. In this study, the mean and instantaneous streamlines, vorticity and temperature contours for different power–law indexes are presented and discussed. In addition, the global quantities such as pressure and friction coefficients, rms of lift and drag coefficients, Strouhal and Nusselt numbers are determined and discussed for various power–law indexes.<\div>
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