Numerical study on convective heat transfer for water-based alumina nanofluids

سال انتشار: 1390
محل انتشار: هشتمین همایش ملی انرژی
کد COI اختصاصی: NEC08_026
زبان مقاله: انگلیسی
تعداد مشاهده: 1615

نویسندگان

department of mechanics,Islamic azad university marvdasht branch , marvdasht,iran

چکیده

The present work is an experimental study of steady state convective heat transfer of de-ionized water with a (0.04% by volume)volume fraction of AL2O3 nanoparticles dispersed to form a nanofluid that flows through a aluminium tube. Laminar fully developed flow heat transfer coefficient of AL2O3 nanoparticles are dispersed in water in circular tube is discussed in this paper. In order to validate the heat transfer coefficient of nanofluid in circular tube commercially available CFD software FLUENT 6.3.26 is used. The thermo-physical properties of the AL2O3 nanofluid are estimated by using the equations available in literature. Thermo-physical properties of the nanofluid are considered for heat transfer coefficient by assuming nanofluid is a single-phase fluid. Constant Wall Heat Flux (CWHF) boundary condition is incorporated for heat transfer analysis . the flow and temperature fields are assumed fully developed the flow and temperature fields are assumed fully developed (x/D> 10). The analysis is conducted in the volume concentration from 0.4% .A maximum of 2.25 times heat transfer enhancement is obtained by using nanofluid as working medium.

کلیدواژه ها

Nanoparticles, Nanofluid, Heat transfer enhancement, Thermal conductivity enhancement, convective heat transfer

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.