کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4993564 1458031 2017 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Forced convection and thermal predictions of pulsating nanofluid flow over a backward facing step with a corrugated bottom wall
ترجمه فارسی عنوان
پیمانکاری و پیش بینی های حرارتی جریان نانوسیم های پالسی در یک گام رو به عقب با یک دیوار پایه موجدار
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In this study, laminar forced convection of pulsating nanofluid flow over a backward-facing step with a corrugated bottom wall was numerically examined by using finite volume method. Part of the bottom wall downstream of the step was corrugated and kept at constant temperature. Effects of Reynolds number, length and height of the surface corrugation wave, nanoparticle volume fraction, amplitude and frequency of flow pulsation on the fluid flow and heat transfer were numerically investigated. It was observed that average Nusselt number enhances as the Reynolds number, length and height of the corrugation wave increase. Average Nusselt number versus Strouhal number shows a resonant type behavior and flow pulsation amplitude increment results in heat transfer enhancement. Average heat transfer rate increases with the inclusion of the nanoparticles but the rate of enhancement depends on the nanoparticle solid volume fraction interval. An efficient computational strategy for the thermal performance prediction of the system was developed by using proper orthogonal decomposition and artificial neural networks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 110, July 2017, Pages 231-247
نویسندگان
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