کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
660018 1458140 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mixed convection analysis of laminar pulsating flow and heat transfer over a backward-facing step
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Mixed convection analysis of laminar pulsating flow and heat transfer over a backward-facing step
چکیده انگلیسی

The present study analyzes mixed convection of laminar pulsatile flow and heat transfer past a backward-facing step in a channel. Discretization of the governing equations was achieved through a finite element scheme based on the Galerkin method of weighted residuals. Temporal variations of streamlines, isotherms, and dimensionless skin friction coefficient and Nusselt number were presented for various relevant dimensionless groups. Fluid flow and heat transfer characteristics were examined in the domain of the Reynolds number, Richardson number and the dimensionless oscillation frequency such that: 100 ⩽ Re ⩽ 1000, 1.78 × 10−3 ⩽ Ri ⩽ 10, and 0.1 ⩽ ϖ ⩽ 5. The working fluid is assigned a Prandtl number of 0.71 throughout this investigation. Our results illustrates that Reynolds number, Richardson number, and dimensionless oscillation frequency have a profound effect on the structure of fluid flow, heat transfer fields, and skin friction coefficient.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 51, Issues 25–26, December 2008, Pages 5785–5793
نویسندگان
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