کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
766460 897103 2008 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of fluid flow and heat transfer in a double pipe heat exchanger with porous structures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Analysis of fluid flow and heat transfer in a double pipe heat exchanger with porous structures
چکیده انگلیسی

A numerical study of flow and heat transfer characteristics is made in a double pipe heat exchanger with porous structures inserted in the annular gap in two configurations: on the inner cylinder (A) and on both the cylinders in a staggered fashion (B). The flow field in the porous regions is modelled by the Darcy–Brinkman–Forchheimer model and the finite volume method is used to solve the governing equations. The effects of several parameters such as Darcy number, porous structures thickness and spacing and thermal conductivity ratio are considered in order to look for the most appropriate properties of the porous structures that allow optimal heat transfer enhancement. It is found that the highest heat transfer rates are obtained when the porous structures are attached in configuration B especially at small spacing and high thicknesses.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 49, Issue 11, November 2008, Pages 3217–3229
نویسندگان
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