نوع مقاله : مقاله پژوهشی
1 گروه مکانیک دانشگاه آزاد اسلامی واحد اراک، اراک، ایران
2 گروه مکانیک، واحد اسدآباد، دانشگاه آزاد اسلامی، اسدآباد، ایران
3 3- گروه برق دانشکده مهندسی دانشگاه شهید چمران اهواز، اهواز، ایران
عنوان مقاله [English]
In this article, turbulent flow characteristic of GO-water nanofluids is thoroughly reviewed. Also presents the effects of some important parameters such as, GO nanoparticles concentration, and Reynolds number on heat transfer rate. The range of nanofluid concentration is considered as 0.0%-1.0% of volume concentration and in a double tube heat exchanger counter flow under turbulent flow conditions which Reynolds number of the turbulent flow is chosen between 80000 and 180000; the effect of graphene oxide nanocatalysts on heat transfer has been investigated. The viscosity of nanofluid has a maximum of 23% increase in comparison to the base fluid (water). There was a 25.4% growth in thermal conductivity in the present nanofluid compared to the minimum amount of that for water. Considering the data obtained from this study, the Nusselt number, the convective heat transfer coefficient, the friction factor, and the thermal performance coefficient are investigated. In order to validate the data, the results of this study are compared with preceding studies and experimental data. Maximally, the nanofluid has a 23% increment in the friction factor, 69.7% augmentation in the convective heat transfer coefficient, 37% growth in Nusselt number in comparison to the base fluid. However, the thermal performance coefficient maximally increments by 1.85. According to the achieved results, the present nanofluid can be used in heat exchangers.